consider a case where total body water (tbw) volume is 45 l and icf volume is 15l with an equilibrium concentration of 300 mosm (mosmols/l). what is an osmole? how many osmoles are found in 10g of mgcl2? draw a darrow-yonnet diagram that shows the initial equilibrium water distribution between body compartments and then shows the adjusted equilibrium concentration and water distribution upon ingestion of 15 g of nacl? how much salt must be ingested to increase the ecf by 0.5l?
Answers
For every 1 mole of MgCl2 in the solution, there are 3 osmoles of solute particles. Because nonionic compounds do not dissociate, only one osmole of solute is produced for every one mole of solute.
What is osmoles ?The number of osmoles of solute per litre of solution is the unit of measurement for solute concentration, also referred to as osmotic concentration or osmolarity. Similar to how a solution's molarity is expressed as "M," a solution's osmolarity is typically expressed as Osm/L.
Both the control of cell volume and the production of recombinant proteins have been connected to osmolality. Hyperosmotic circumstances typically result in an increase in cell size.
Amino acid, carbohydrate, and electrolyte concentrations all have an impact on a formula's osmolality. Multiply the number of particles produced from dissolving the solution in water by the molarity to find the osmolarity (osmol).
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Related Questions
this is the chemical formula for talc (the main ingredient in talcum powder): mg3si2o52oh2 an analytical chemist has determined by measurements that there are 0.096 moles of magnesium in a sample of talc. how many moles of silicon are in the sample?
Answers
The chemical formula for talc, the main ingredient in talcum powder, is Mg3Si2O5(OH)2. To determine the number of moles of silicon in a sample of talc, given that there are 0.096 moles of magnesium, 0.064 moles of silicon in the sample of talc.
we will use the stoichiometry of the chemical formula.
In the formula, there are 3 moles of magnesium (Mg) for every 2 moles of silicon (Si). This means that the ratio of Mg to Si is 3:2. To find the number of moles of Si, we can set up a proportion:
Moles of Mg / Moles of Si = 3 / 2
We are given that there are 0.096 moles of Mg in the sample. Plugging this value into the proportion, we get:
0.096 / Moles of Si = 3 / 2
Now we can solve for the moles of Si by cross-multiplying:
(0.096)(2) = (3)(Moles of Si)
0.192 = 3(Moles of Si)
To find the moles of Si, we will divide both sides of the equation by 3:
Moles of Si = 0.192 / 3
Moles of Si ≈ 0.064
Therefore, there are approximately 0.064 moles of silicon in the sample of talc.
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A scientist measures the standard enthalpy change for the following reaction to be -139.5 kj :
h2(g) + c2h4(g)c2h6(g)
based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of c2h4(g) is _____ kj/mol.
Answers
Answer:
A scientist measures the standard enthalpy change for the following reaction to be -139.5 kj :
h2(g) + c2h4(g)c2h6(g)
based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of c2h4(g) is _____ kj/mol
Explanation:
Hydrogen ΔHof (kJ/mol) ΔGof (kJ/mol) So (J/mol K)
H2 (g)
0
0
130.7
Carbon ΔHof (kJ/mol) ΔGof (kJ/mol) So (J/mol K)
C2H6 (g)
-84.7
-32.8
229.6
Write the balanced half-reactions describing the oxidation and reduction that happens in the following reaction.CuCl2(aq)+Mg(s)→MgCl2(aq)+Cu(s)
Answers
Answer:
REDUCTION: Cu^+2 - 2e --> Cu
OXIDATION: Mg --> Mg^+2 +2e-
Explanation:
Remember the acronym LEO says GER. This means:
Losing Electrons is Oxidation
Gaining Electrons is Reduction
1. The first step in writing any balanced half reactions is to assign oxidation numbers to each atom on both the reactant and product side. Oxidation numbers are essentially the charges of each atom, and are usually just the charge of the atom.
Reactant side:
Cu: +2 (to cancel out 2 Cl - atoms)
Cl2: -1 (you do not consider the amount of atoms when assigning O.N.)
Mg: 0 (all atoms in pure elements have an O.N. of zero)
Product Side:
Cu: 0 (because this is a pure atom after the reaction)
Cl2: -1 (stays the same so this is not involved in the REDOX reaction)
Mg: +2 (to cancel out the -2 from two Cl - atoms)
Compare Reactant vs Product Side:
Cu: +2 --> 0 (Cu gains electrons, so this is the reduction half reaction)
Mg: 0 --> +2 (Mg loses electrons, so this is the oxidation half reaction)
Now separate the two atoms into UNBALANCED half reactions to build a base:
REDUCTION: Cu +2 --> Cu
OXIDATION: Mg --> Mg +2
The next step in typical half reactions is to balance the number of atoms in each half, but the amount of Cu stays 1 (1 Cu +2 --> 1 Cu) and the amount of Mg stays 1 (1 Mg --> 1 Mg +2), therefore there are no atoms to balance
Balance each reaction for charge (charge = number of electrons)
REDUCTION: Cu +2 -2e - --> Cu (so the charge on both sides are zero)
OXIDATION: Mg --> Mg +2 +2e- (so the positive plus 2 electrons cancels out the positive 2 O.N. on the reactant side)
Adding electrons to balance charge will always occur to the left of the reaction arrow for reduction and to the right of the reaction arrow for oxidation.
These are considered the balanced half reactions:
REDUCTION: Cu^+2 - 2e --> Cu
OXIDATION: Mg --> Mg^+2 +2e-
If you wished to write the entire equation, the next step would be to add these two half reactions. There are no additional steps for this addition because the electrons cancel out on both sides (they have to be equal in order to add)
So the COMPLETE equation is:
Cu^+2 + Mg --> Cu + Mg^+2
The overall balanced half-reactions are:
Oxidation: 2Mg(s) → 2Mg²⁺(aq) + 4e⁻
Reduction: Cu²⁺(aq) + 2e⁻ → Cu(s)
What are redox reactions?A chemical process in which electrons are moved between two reactants is referred to as a redox reaction. The alteration in the oxidation states of the reacting species can be used to pinpoint this electron transfer.
The oxidation half-reaction involves the loss of electrons and the reduction half-reaction involves the gain of electrons.
Oxidation half-reaction: Mg(s) → Mg²⁺(aq) + 2e⁻
Reduction half-reaction: Cu²⁺(aq) + 2e⁻ → Cu(s)
To balance the charges, we need to multiply the oxidation half-reaction by 2:
2Mg(s) → 2Mg²⁺(aq) + 4e⁻
Now the number of electrons lost in the oxidation half-reaction (4) is equal to the number of electrons gained in the reduction half-reaction (4).
Thus, the overall balanced reaction is:
2Mg(s) + CuCl₂(aq) → 2MgCl₂(aq) + Cu(s)
And the balanced half-reactions are:
Oxidation: 2Mg(s) → 2Mg²⁺(aq) + 4e⁻
Reduction: Cu²⁺(aq) + 2e⁻ → Cu(s)
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30 POINTS PLS MATCH THESE UP!!
ITEM BANK: Move to Top
This is a species which speeds up chemical reactions, but does not react itself.
dag and drop where
Catalyst
The changing of substances to other substances by the breaking of bonds in
reactants and the formation of bonds in products.
drag and drop answerhero
Chemical Reaction
This is the substance(s) formed in a chemical reaction.
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Neutralization
Precipitate
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A chemical reaction in which two or more substances combine to form a single
substance. Also known as a combination reaction.
A chemical change in which a single compound is broken down into two or more
simpler products,
Reactants
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decomposition reaction
double replacement
A chemical change in which one element replaces a second element in a compound,
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endothermic
A chemical change that involves an exchange of positive ions between two
compounds.
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exothermic
A heat-absorbing process
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half reaction
A heat releasing process.
drag and drop answer here
product
single replacement reaction
These are the elements or compounds that enter into a chemical reaction. .
drag and drop answer here
structural formula
This is the type of reaction that occurs when an acid cancels with a base.
drag and drop answer here
synthesis reaction
This is a solid that is formed during a chemical reaction, typically in solution.
drag and drop answer here
A half reaction shows either the oxidation or reduction half of a redox reaction.
drag and drop answer het
A formula showing all the atoms and valence electrons in the formula. This is also
called a Lewis Structure.
drag and drop answer here
Answers
Answer:
There is an app called Socrative (It has an owl on the app) that can give you the definition so you can match them without waiting. All you have to do is take a picture of the definition and it will give you the answer
How much heat will be produced when 0.58 moles of
hydrogen peroxide (H2O2) decomposes? *
98 kJ + 2H,02(1) → 2H2O(l) + O2(g)
Answers
Answer:57.6 kJ
Explanation:
Ethylenediamine (en) is a bidentate ligand. What is the coordination number of cobalt in [Co(en)2Cl2]Cl
Answers
The coordination number of cobalt in [Co(en)₂Cl₂]Cl is 6.
The formula [Co(en)₂Cl₂]Cl indicates that there are two ethylenediamine (en) ligands, each of which can donate two electrons to the cobalt ion (Co), making a total of four electrons donated by the ligands.
Additionally, there are two chloride (Cl⁻) ions, each of which can donate one electron to the cobalt ion. Therefore, there are a total of six donor atoms surrounding the cobalt ion, which gives a coordination number of 6.
The coordination number of a metal ion is the number of donor atoms that are directly bonded to the metal ion. In this case, the ethylenediamine ligands are bidentate, meaning that they can form two bonds with the metal ion, and each chloride ion can form one bond with the metal ion.
Therefore, the total number of donor atoms surrounding the cobalt ion is six, which gives a coordination number of 6.
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Atoms of an element have different numbers of neutrons. They have the same chemical properties but different masses and may be radioactive. What are they called?
Answers
Atoms of an element that have different numbers of neutrons are called isotopes.
An isotope is a variation of a chemical element that varies in the number of neutrons present in its atomic nucleus. Isotopes have the same number of protons but differing numbers of neutrons. For instance, carbon-12, carbon-13, and carbon-14 are three isotopes of the element carbon, with different numbers of neutrons.
There are three isotopes of hydrogen, each with only one proton in the nucleus, but with 0, 1, or 2 neutrons. These isotopes of hydrogen are often referred to by their common names: protium, deuterium, and tritium, respectively.In summary, atoms of an element that have different numbers of neutrons are called isotopes.
Technetium-99 (Tc-99) is the most commonly used radioisotope for diagnosis, with approximately 40 million procedures performed annually. It accounts for approximately 80% of all nuclear medicine procedures and 85% of diagnostic scans performed worldwide in nuclear medicine.
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A reaction produces 14.2 grams of a product. The theoretical yield of that product is 17.1 grams. Which of the statements are true
Answers
A reaction produces 14.2 grams of a product. The theoretical yield of that product is 17.1 grams. The true statements are (E) The actual yield of the product is 14.2 grams and (C) The percent yield of the product is 83.0%.
The actual yield refers to the amount of product obtained in the reaction, which is given as 14.2 grams. It represents the experimental result of the reaction.
The percent yield is a measure of how efficiently the reaction produces the desired product. It is calculated by dividing the actual yield by the theoretical yield (17.1 grams) and multiplying by 100. In this case, the percent yield is approximately 83.0%.
The other statements (A, B, D, F) are not true. The percent yield cannot be equal to the actual yield, and it cannot exceed 100%.
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Complete question :
A reaction produces 14.2 grams of a product. The theoretical yield of that product is 17.1 grams. Which of the statements are true? Select 2 that apply.
A. The percent yield of the product is 14.2%.
B. The percent yield of the product is 17.1%.
C. The percent yield of the product is 83.0%.
D. The percent yield of the product is 120.0%.
E. The actual yield of the product is 14.2 grams.
F. The actual yield of the product is 17.1 grams.
What is the effect of increasing pressure on the equilibrium? N2 + 3H2 ⇔ 2NH3 a) Equilibrium shifts in forward direction. b) Equilibrium shifts in backward direction. c) No effect d) It does not depends on pressure.
Answers
Answer:
a) Equilibrium shifts in forward direction.
Explanation:
If pressure is increased, equilibrium shifts to the side with the fewer moles of gas.
There are 4 moles of gas in the reactants and 2 moles of gas in the products.
The equilibrium will shift in the forward direction towards the products.
Hope that helps.
Answer:
A
Explanation:
0.070g of caffeine is dissolved in 4.0 ml of water. the caffeine is extracted from the aqueous solution three times with 2.o ml portions of methylene chloride. calculate the total amount of caffeine that can be extracted into the three portions of methylene chloride
Answers
The amount of caffeine that can be extracted from the aqueous solution into the three portions of methylene chloride is \(0.070g.\).
Caffeine is a stimulant drug that is found naturally in tea, coffee, chocolate, and some other plants. It is a molecular compound composed of 8 carbon atoms (C8), 10 hydrogen atoms (H10), 4 nitrogen atoms (N4), and 2 oxygen atoms (O2).
This can be calculated using the following equation:
Caffeine Extracted = (Amount of caffeine dissolved in water) / (Volume of water) x (Volume of methylene chloride)
\(Caffeine Extracted =\frac{ (Amount of caffeine dissolved in water) }{ (Volume of water) * (Volume of methylene chloride)}\\\\\\Caffeine Extracted = \frac{(0.070 g) }{(4.0 mL) * (2.0mL)}\\ \\ = 0.035 g\)
Therefore, the total amount of caffeine that can be extracted into the three portions of methylene chloride is \(0.070g\)
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Question 17
In a gas, which quantities relate in such a way that when one increases, the other one decreases?
OA) volume, pressure
OB) temperature, pressure
OC) temperature, volume
OD) number of particles, pressure
Answers
Gas is a type of matter that has no defined shape or volume. Gases can be made up of a single element, such as hydrogen gas (H2), a compound, such as carbon dioxide (CO2), or a mixture of several gases, such as air.
Explain in a gas which quantities relate when one increases the other one decreases?A gas is a sample of matter that conforms to the shape of a container in which it is held and acquires a uniform density inside the container, even in the presence of gravity and regardless of the amount of substance in the container.
By evaluating the four major gases you're searching for—oxygen (O2), carbon monoxide (CO), hydrogen sulphide (H2S), and methane (CH4)—a 4 gas monitor can help you protect your employees in any setting.
Natural gas is an odorless, gaseous mixture of hydrocarbons—predominantly made up of methane (CH4).
In a gas when Volume increase Temperature decreases.
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a gas occupies 3.5 L at standard pressure. find the volume of the gas when the pressure is 1.5 atm
Answers
Answer:
5.25 lit
Explanation:
\(standard \: pressure = 1atm\)
\( \frac{3.5lit}{1atm} = \frac{x}{1.5atm} \)
\(x = 5.25lit\)
________ grams of lead (II) oxide will be produced by the decomposition of 6.25 g of lead (II) carbonate
Answers
Approximately 3.99 grams of lead (II) oxide will be produced by the decomposition of 6.25 grams of lead (II) carbonate.
The balanced chemical equation for the decomposition of lead (II) carbonate is as follows:
PbCO3(s) -> PbO(s) + CO2(g)
From the equation, we can see that one mole of lead (II) carbonate decomposes to yield one mole of lead (II) oxide.
To determine the number of moles of lead (II) carbonate, we need to calculate its molar mass. The molar mass of lead (II) carbonate (PbCO3) can be calculated as follows:
Molar mass of PbCO3 = Atomic mass of Pb + Atomic mass of C + (3 x Atomic mass of O)
= (207.2 g/mol) + (12.01 g/mol) + (3 x 16.00 g/mol)
= 207.2 g/mol + 12.01 g/mol + 48.00 g/mol
= 267.21 g/mol
Now, we can calculate the number of moles of lead (II) carbonate using its given mass:
Number of moles of PbCO3 = Mass of PbCO3 / Molar mass of PbCO3
= 6.25 g / 267.21 g/mol
≈ 0.0234 mol
Since the stoichiometry of the balanced equation tells us that 1 mole of PbCO3 produces 1 mole of PbO, the number of moles of PbO produced will also be 0.0234 mol.
Finally, we can calculate the mass of lead (II) oxide (PbO) produced using its molar mass:
Mass of PbO = Number of moles of PbO x Molar mass of PbO
= 0.0234 mol x (207.2 g/mol)
≈ 4.84 g
Therefore, approximately 3.99 grams of lead (II) oxide will be produced by the decomposition of 6.25 grams of lead (II) carbonate.
By decomposing 6.25 grams of lead (II) carbonate, approximately 3.99 grams of lead (II) oxide will be produced. This calculation is based on the balanced chemical equation and the molar masses of the compounds involved.
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For each of the following pairs, predict which substance possesses the larger entropy per mole.
PART A:
Compare 1 mol of NO(g) at 300 ∘C, 0. 01 atm and 1 mol of NO2(g) at 300 ∘C, 0. 01 atm.
When comparing NO(g)and NO2(g), one mole of________ at 300 ∘Cand 0. 01 atm possesses the larger entropy per mole.
at 300 ∘C and 0. 01 atm possesses the larger entropy per mole.
This is best explained because it _______________
choices: NO(g), occupies a larger volume, NO2(g), has more freedom of movement in aq solution & is more complex molecule with more vibrational degrees of freedom
PART B:
Compare 1 mol of H2O(g) at 100 ∘C, 1 atm and 1 mol of H2O(l) at 100 ∘C, 1 atm.
PART C:
Compare 0. 5 mol of O2(g) at 298 K, 20-L volume and 0. 5 CH4(g) at 298 K, 20-L volume.
PART D
Compare 100 g Na2CO3(s) at 30 ∘C and 100 g Na2CO3(aq) at 30 ∘C
Answers
When comparing NO(g) and NO₂(g) at 300 ∘C and 0.01 atm, one mole of NO₂(g) possesses the larger entropy per mole. When comparing H₂O(g) and H₂O(l) at 100 ∘C and 1 atm, one mole of H₂O(g) possesses the larger entropy per mole. When comparing O₂(g) and CH₄(g) at 298 K and 20-L volume, one mole of O₂(g) possesses the larger entropy per mole. When comparing Na₂CO₃(s) and Na₂CO₃(aq) at 30 ∘C, they have the same entropy per mole .
PART A: When comparing NO(g) and NO₂(g) at 300 ∘C and 0.01 atm, one mole of NO₂(g) possesses the larger entropy per mole.
This is best explained because NO₂(g) is a more complex molecule than NO(g) with more vibrational degrees of freedom. This means that NO₂(g) has more ways in which it can store energy, leading to a higher entropy.
PART B: When comparing H₂O(g) and H₂O(l) at 100 ∘C and 1 atm, one mole of H₂O(g) possesses the larger entropy per mole.
This is because in the gaseous state, H₂O molecules have more freedom of movement and can occupy a larger volume, leading to a higher entropy.
PART C: When comparing O₂(g) and CH₄(g) at 298 K and 20-L volume, one mole of O₂(g) possesses the larger entropy per mole. This is because O₂(g) is a diatomic molecule with more degrees of freedom than CH₄(g), which has a more complex structure with fewer degrees of freedom.
PART D: When comparing Na₂CO₃(s) and Na₂CO₃(aq) at 30 ∘C, they have the same entropy per mole since the state of matter (solid or aqueous) does not affect the entropy of a substance.
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you have an object with mass of 86 g and volume of 10 cm^3 (cubed). calculate density, show your work, and identify which material you have from the list.
Answers
Answer:
8.6g/cm³ (BRASS)
Explanation:
Given the following :
Mass of object = 86g
Volume of object = 10cm³
The density of an object is calculated using the formula :
Density(g/cm³) = mass(g) / volume(cm³)
Inputting our values :
Density = 86g / 10cm³
Density = 8.6g/cm³
According to the table provided, the object which corresponds to having a density of 8.6g/cm³ is BRASS
1. The density of the material is 8.6 g/cm³.
2. The material is brass
Density is simply defined as the mass per unit volume of a substance i.e
Density = mass / volume 1. Determination of the density of the materialThe density of the material can be obtained as shown below
Mass = 86 g
Volume = 10 cm³
Density =?Density = mass / volume
Density = 86 / 10
Density = 8.6 g/cm³Therefore, the density of the material is 8.6 g/cm³
2. Determination of the material.From the calculation made above, the density of the material is 8.6 g/cm³.
Comparing the density of the material (i.e 8.6 g/cm³) with those
given in the table from the question, we can conclude that the
material is brass.
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Will this reaction occur?
Ni (s) + H,O(1)
1
Yes
No
Answers
Because it’s not balanced
What is the density of a block with a volume of 5 cm3 and a mass of 20 g?
Answers
Answer: 4g/cm^3 or 4000g/L (4kg/L)
Explanation:
I'm not sure what units the question intended so I put both. For the first one, the equation for density is mass/volume so I divided the 20g by 5cm^3 to get 4g/cm^3. Just in case those aren't the intended units for volume and is instead liters, one cm^3 equals one ml. In addition, there are 1000ml in every liter so you can determine the amount per liter by multiplying 4g/ml by 1000 to get 4000g/L or 4kg/L.
I hope this helps.
How is the density of an object calculated?
Dividing the object’s volume by its mass
Multiplying the object’s mass and volume
Multiplying the object’s volume and weight
Dividing the object’s mass by its volume
Answers
Answer:
Divide its mass by the volume.
Explanation:
Please write a conclusion paragraph :) for this
Answers
what happen when a buring matchstick is held near the gas jar
Answers
When a burning matchstick is held near the gas jar, it burns brightly.
What is combustion?Combustion is the reaction of a substance with oxygen causing release of energy. The reaction is exothermic and often involves a flame.
Combustion of natural gas is an important source of energy for homes and industry.
When a burning matchstick is held near the gas jar, it burns brightly because oxygen supports combustion. When oxygen combines, chemically with another chemical like carbon or hydrogen, energy is released rapidly in the form of heat that creates fire and makes the matchstick burns brightly.
Therefore, when a burning matchstick is held near the gas jar, it burns brightly.
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E. Give reasons
1. Oxygen is a diatomic element.
3. The valency of sodium is one.
F. Differentiate between
1. electrovalent bond and covalent bond
2. acidic radical and basic radical
Answers
Answer:
the valency of sodium is one because sodium loses 1 electron to become stable
How many grams are in 8.5 moles of lithium oxide?
Answers
List the standard and optional parts of a letter. If the
standard parts of a letter are omitted, what is the impression
conveyed about the organization?
Answers
If the standard parts of a letter are omitted, it conveys a lack of professionalism and attention to detail on the part of the organization.
When standard parts of a letter are omitted, it sends a negative impression about the organization. The standard parts of a letter, such as the date, sender's address, inside address, salutation, body, closing, and signature, are crucial for effective communication and conveying professionalism.
Omitting the date can make the letter appear outdated or unimportant. The absence of the sender's address and inside address makes it difficult to identify the parties involved and can lead to confusion. Without a proper salutation, the letter lacks a courteous and respectful opening, potentially giving the impression of indifference.
The body is the main content of the letter, and omitting it renders the letter incomplete and devoid of meaningful information. The closing provides a polite and formal ending, and its omission can make the letter seem abrupt or impolite. The signature adds a personal touch and authenticity to the letter, and its absence may raise doubts about the letter's origin.
Optional parts, such as letterhead, subject line, reference line, attention line, and postscript, enhance the clarity and professionalism of the letter. However, the omission of these optional parts may not convey as negative an impression as the omission of standard parts.
Overall, omitting standard parts of a letter conveys a lack of professionalism, attention to detail, and respect for the recipient. It can undermine the organization's credibility and hinder effective communication.
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Type the correct answer in each box.
Which chemical symbols will complete the equation for this decomposition reaction?
2KI → 2 + 2
Answers
Answer:
2KI → 2K + I₂
Explanation:
(not my definition, but form a trustworthy source)
The definition of a decomposition reaction is:
a chemical reaction in which one reactant breaks down into two or more products.
In this case, potassium iodide will decompose into potassium and iodine.
2KI → 2K + 2I
2 Potassium and 2 Iodine on both sides, so equation is balanced.
Or, it can be written as 2KI → 2K + I₂
An element A has an atomic number of 11 and another element B has an atomic number 17 (A
and B are not actual chemical symbols of elements)
i. What group on the periodic table does A belong?
(Imk)
ii. What type of bond will be formed between A and B? Explain.
(2mks
(lm
iii.
Write the formula of the compound that will be formed between A and B.
b. Arrange the species X, X and X in order of increasing size.
Give correct answer or else I will report you
Answers
Answer:
Agroup one.B group seven. lonic/electrovalent bonding.
sodium chloride, 2,8. 2,8,8
Explanation:
the reason why it is an lonicbonding is because it is a force of attraction between opposite charges.it involves the transfer of electrons from a metal to a non-metal.
A basic amino acid has an R group that contains
A) a methyl group
B) a thiol group
C) an amine group
d) a carboxyl group
Answers
A basic amino acid has an R group that contains ( D) a carboxyl group.
What is acid?Acid is a substance that has a pH level of lower than 7.0 and is capable of corroding or dissolving other substances. It is usually found in aqueous solutions and is a highly reactive substance. Examples of acid include sulfuric acid, hydrochloric acid, nitric acid and acetic acid. These are used in a variety of industries such as food production, industrial cleaning and chemical engineering. Acid is also used in the laboratory for titrations, pH testing and other experiments. Acids can be dangerous if mishandled and can cause skin, eye and respiratory irritation and even chemical burns.
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a molecule in a chemical reaction that has its chemical bonds broken is called the _______ in the reaction?
Answers
Answer:
reactants
Explanation:
How many grams are there in 0.37 moles of H20?
Answers
Answer:
18.01528 gram using the molecular weight calculator and the molar mass of H2O.
Explanation:
the hume-rotthery rule is a set of guidelines for... select one: a. living one's life! b. interstitial solid solutions to be viable c. substitutional solid solutions to be viable d. maximizing space filling in an alloy crystal
Answers
The hume-rotthery rule is a set of guidelines for substitutional solid solutions to be viable and interstitial solid solutions to be viable. The correct answer is B and C.
The basic guidelines known as the Hume-Rothery rules, which bear William Hume-name, Rothery's outline the circumstances in which an element might dissolve in a metal and create a solid solution. The rules are divided into two categories: interstitial solid solutions and substitutional solid solutions.
The following are the Hume-Rothery rules for solid substitutional solutions:
No more than 15% of the atomic radius of the solute and solvent must be different.Solvent and solute crystal structures must be identical.When the solvent and the solute have the same valency, complete solubility happens. A metal is more likely to dissolve a higher valency metal than the opposite is true.Similar electronegativity should exist between the solvent and the solute. If the difference in electronegativity between the metals is too considerable, intermetallic compounds rather than solid solutions are more likely to occur.The Hume-Rothery Rules are as follows for interstitial solid solutions :Atoms in the solute should have a radius that is less than 59% that of atoms in the solvent.Similar electronegativity should exist between the solvent and the solute.Two elements should have the same valence (quality). The solubility decreases with increasing valence differences between atoms in the solute and solvent.Learn more about Hume-Rothery Rules at https://brainly.com/question/17173430
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A student prepared four solutions of known [Cu2+] and measured the absorbance of each solution using the same cuvette. The graph shows the data for two absorbance measurements done for each solution. Which of the following identifies the most likely error that affected the absorbance recorded for the solution with [Cu2+]≈7×10−3M in the second trial?
a. The cuvette was rinsed with water between measurements.
b. A fingerprint was left on the side of the cuvette facing the detector.
c. The absorbance was measured at a wavelength where Cu2+ has a lower molar absorptivity.
d. The cuvette was not filled with the same volume of solution.
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Answers
A fingerprint was left on the side of the cuvette facing the detector identifies the most likely error that affected the absorbance recorded for the solution with [Cu²⁺]≈7×10⁻³M in the second trial and the correct option is option B.
The Beer-Lambert law relates the attenuation of light to the properties of the material through which the light is traveling.
The Beer-Lambert law states that for a given material sample path length and concentration of the sample are directly proportional to the absorbance of the light. The factors which influence absorbance are:
The concentration of the sample.The thickness of the medium.The temperature at which we will measure the absorbance.The wavelength.Learn more about Beer Lambert Law, here:
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