What is the pOH of household ammonia in which the [H3O+] is 1.0 x 10power(–10) M ? K w = 1.0 x 10power(–14) Show your work.
Answers
pH is a measure of the acidity or alkalinity of a solution. It quantifies the concentration of hydrogen ions (H+) in a solution. The pH scale ranges from 0 to 14, where pH 7 is considered neutral. A pH value less than 7 indicates acidity, with lower values indicating higher acidity. the he concentration of hydroxide ions in the household ammonia solution is \(\(1.0 \times 10^{-4}\) M.\) and the pOH of the household ammonia solution is approximately 4.
The pOH of household ammonia with an [H3O+] of 1.0 x 10^(-10) M can be calculated as follows:
\(\[ \text{pOH} = -\log_{10} [\text{OH}^-] \]\)
Since ,\(\[ K_w = [\text{H}_3\text{O}^+][\text{OH}^-] \]\)
we can rearrange the equation to solve for \([OH^-]\)
\(\[ \text{[OH}^-] = \frac{{K_w}}{{\text{[H}_3\text{O}^+]}} \]\)
Substituting the given values:
\(\[ \text{[OH}^-] = \frac{{1.0 \times 10^{-14} \, \text{M}^2}}{{1.0 \times 10^{-10} \, \text{M}}} \]\)
Simplifying the expression:
\(\[ \text{[OH}^-] = 1.0 \times 10^{-4} \, \text{M} \]\)
Therefore, the concentration of hydroxide ions in the household ammonia solution is \(\(1.0 \times 10^{-4}\) M.\)
\(\[ \text{pOH} = -\log_{10} (1.0 \times 10^{-4}) \]\)
\(\[ \text{pOH} \approx 4 \]\)
Therefore, the pOH of the household ammonia solution is approximately 4.
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Related Questions
Using given data, calculate the change in Gibbs free energy for each of the following reactions. You may want to reference (Pages 831 - 832) Section 19.6 while completing this problem. Part A: 2Ag(s)+Cl2(g)→2AgCl(s) Gibbs free energy for AgCl(s) is −109.70 kJ/mol Express your answer without scientific notation and using one decimal place.(units kJ) Part B: P4O10(s)+16H2(g)→4PH3(g)+10H2O(g) Gibbs free energy for P4O10(s) is −2675.2 kJ/mol Gibbs free energy for PH3(g) is 13.4 kJ/mol Gibbs free energy for H2O(g) is −228.57 kJ/mol Express your answer without scientific notation and using one decimal place.(units kJ) Part C: CH4(g)+4F2(g)→CF4(g)+4HF(g) Gibbs free energy for CH4(g) is −50.8 kJ/mol Gibbs free energy for CF4(g) is −635.1 kJ/mol Gibbs free energy for HF(g) is −270.70 kJ/mol Express your answer without scientific notation and using one decimal place. (unitskJ) 2H2O2(l)→2H2O(l)+O2(g) Gibbs free energy for H2O2(l) is −120.4 kJ/mol Gibbs free energy for H2O(l) is −237.13 kJ/mol Express your answer without scientific notation and using one decimal place.(units kJ) Part D: 2H2O2(l)→2H2O(l)+O2(g) Gibbs free energy for H2O2(l) is −120.4 kJ/mol Gibbs free energy for H2O(l) is −237.13 kJ/mol
Answers
At 298 K, the reaction's standard free energy change is G0 = - 115 kJ. The calculated values of Go are very helpful in determining whether a reaction will take place spontaneously if the reactants and products are combined under typical circumstances.
How do you calculate the Gibbs free energy?Standard entropy change (H°) is 50.6 kJ/mol at 25 °C, and the absolute entropies of the products and reactants are S°(N2H4) = 121.2 J/(mol•K), S°(N2) = 191.6 J/(mol•K), and S°(H2) = 130.7 J/(mol•K).
According to the Gibbs phase rule, where n is the number of thermodynamic degrees of freedom in the system, the relationship between the number of phases (p) and components (c) in a given alloy under equilibrium conditions at constant pressure is given as p+n=c+1.
The calculated values of Go are very helpful in determining whether a reaction will take place spontaneously if the reactants and products are combined under typical circumstances. The internal, kinetic, and potential energies of a system are simply added together to form the total energy E: E=me=m(u+ke+pe)=U+KE+PE.
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Spent lead-acid batteries are exempt from hazardous waste regulations if they are.
Answers
Spent lead-acid batteries are exempt from hazardous waste regulations if they are regenerated to produce new lead-acid batteries.
What are hazardous wastes?Hazardous wastes are waste which present harm or danger to the environment as the plants. animals, and humans living in that environment,
Hazardous wastes include:
Medical wastesNuclear wastesNon-treated sewageIndustrial wastesSpent lead-acid batteries are exempt from hazardous waste regulations if they are regenerated to produce new lead-acid batteries.
In conclusion, hazardous wastes pose threats to the environment.
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2. Describe the changes in bonding and hybridization of the carbon atoms that take place during the polymerization of styrene to form polystyrene.
Answers
During the polymerization of styrene to form polystyrene, the bonding and hybridization of the carbon atoms undergo significant changes.
In styrene, the carbon atoms are originally sp2 hybridized and form a conjugated system of double bonds in the aromatic ring. However, during the polymerization process, the double bonds in styrene undergo addition polymerization.As a result, the carbon atoms in polystyrene undergo a transformation in hybridization from sp2 to sp3. The double bonds break, and new sigma bonds are formed between the carbon atoms, leading to the formation of a long chain of repeating units.
This change in hybridization allows the carbon atoms in polystyrene to form stronger and more stable sigma bonds with neighboring carbon atoms or other substituents. Consequently, the structure of polystyrene becomes a three-dimensional network of carbon-carbon bonds throughout the polymer chainThe transition from an aromatic, conjugated system in styrene to a saturated, three-dimensional polymer structure in polystyrene is vital in the polymerization process, providing the desired properties and structural integrity to the resulting polymer.
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Maria has $10 more than Luisa. IF Maria has m dollars, the Luisa has dollars
Answers
Answer:
M-$10= L
Explanation:
What is the mass of an object with a density of 5.7 g/cm^3 and a volume of 48
cm^3? *
Answers
Answer:
273.6 g
Explanation:
mass =(density)(volume)
mass=(5.7g/cm^3 )(48 cm^3)
cancel out your cm^3 and your are left with grams
multiply (5.7g)(48)=273.6 g
The mass of an object with a density of 5.7 g/cm³ and a volume of 48 cm³ is 273.6 grams.
What is density?Density is defined as the degree to which a material is packed together.
It is also defined as a mass per unit volume of the substance.
Its SI unit is kilogram per cubic meter or gram per meter.
Density can be expressed as
Density = mass / volume
Mass = density x volume
As given, Density = 5.7 g/cm³
Volume = 48 cm³
So, Mass = 5.7 g/cm³ x 48 cm³
= 273.6 grams
Thus, the mass of an object with a density of 5.7 g/cm³ and a volume of 48 cm³ is 273.6 grams.
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state the order in which the ions associated with a compound composed of potassium and bromine would be written in the chemical formula and the compound name
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Following the cation (potassium), the anion is provided (bromide). how the ions linked with a potassium and bromine combination's chemical formula and compound name would be written
The main cation (positive ion) inside animal cells is potassium, whereas the main cation outside animal cells is sodium. The balance between potassium and sodium is maintained by ion pumps in the cell membrane. The concentration variations of these charged particles generate a difference in electric potential between the inside and outside of cells, known as the membrane potential. The potassium and sodium ions' creation of the cell membrane potential enables the cell to produce an action potential, or "spike," of electrical discharge. For bodily processes including neurotransmission, muscular contraction, and heartbeat, cells must be able to create electrical discharge.
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when a certain substance with a mass of 100. grams are heated from 25.0c to 75.0c, it absorbed 4500. joules of heat energy. calculate the specific heat of the substance.
Answers
The specific heat of the substance is given by:c = Q / (m × ΔT)Given,Mass of the substance, m = 100 gChange in temperature, ΔT = 75°C - 25°C = 50°CHeat absorbed, Q = 4500 JUsing the formula we get,c = Q / (m × ΔT)= 4500 J / (100 g × 50°C) = 0.9 J/g·°CTherefore, the specific heat of the substance is 0.9 J/g·°C.
Specific heat is defined as the quantity of heat needed to raise the temperature of 1 gram of the substance by 1 °C. It is calculated using the formula, Q = mcΔT where Q is the heat absorbed, m is the mass of the substance, c is the specific heat of the substance, and ΔT is the change in temperature. Therefore, the specific heat of the substance is given by:c = Q / (m × ΔT)Given, Mass of the substance, m = 100 gChange in temperature, ΔT = 75°C - 25°C = 50°CHeat absorbed, Q = 4500 JUsing the formula we get,c = Q / (m × ΔT)= 4500 J / (100 g × 50°C) = 0.9 J/g·°CTherefore, the specific heat of the substance is 0.9 J/g·°C.
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Directions: Use the words in the word box to complete the following sentences.
acceleration
gravity
counteract
resistance
balanced
force
When the forces acting on an object are _______________ , there is no change in the object's motion.
A _________________ acting on a resting object can cause the object to move.
On Earth, __________________ pulls all objects toward the ground.
When a force acts in the opposite direction of another force, the forces ______________ each other.
More than one force acting on a falling object can reduce its downward ____________________.
Air _____________________ is caused by molecules of air pushing against a moving object.
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Answer:
if u answer my today's a pic quatiom I will give u ur any questions
Answer:
balanced
resistance
gravity
counteract
acceleration
Draw two cyclic constitutional isomers of cis-1-chloro-2-methylcyclobutane with the same size ring.
Answers
Cyclic constitutional isomers refer to isomers that differ in the arrangement of atoms in a cyclic molecule. In cis-1-chloro-2-methylcyclobutane, the chlorine atom and the methyl group are attached to the same carbon atom of the cyclobutane ring. The two cyclic constitutional isomers can be obtained by interchanging the positions of the chlorine and the methyl group.
Both isomers have the same ring size of 4 carbons. However, the positions of the chlorine atom and the methyl group in the ring differ between the two isomers. The name of each isomer reflects the location of the substituents on the ring.
In isomer A, the methyl group is attached to the first carbon atom of the ring and the chlorine atom is attached to the second carbon atom. In isomer B, the positions of the two substituents are reversed. Therefore, these two isomers are constitutional isomers, meaning that they have the same molecular formula but different connectivity of atoms.
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Help!! Need it asap thankyou!
Answers
Answer:
ano gagawin dyan? HAAHAHA
ir fingerprint region analysis i. what peaks are present that should be present? ii. what peaks are absent that should be absent? iii. are there any peaks present or absent that should not be?
Answers
The fingerprint region is important because different compound produces different pattern of troughs on the spectrum.
a)A broad peak in the region between 3100 and 3600 cm-1 shows the presence of exchangeable protons from alcohol, amine, amide or carboxylic acid groups.
b)When sample does not absorb any radiation then all the radiation is transmitted and sample has 100% transmittance. Hence, absorptions in the IR spectrum are as downward deflection that is an “upside-down peak.
b)Homonuclear diatomic molecules do not show IR spectra because they do not have a permanent dipole moment nor the stretching of the atoms about the bond gives any dipole moment
Triggering of molecular vibrations through irradiation with infrared light is called Infrared Spectroscopy. It provides information about the presence or absence of certain functional groups.
The range of IR absorption for covalent bonds is 600 - 4000 cm-1.
An IR -spectrum shows peaks from the range of 3600 to 500 cm-1. IR -frequencies corresponding to the molecular vibrations frequencies.
IR spectra is called fingerprint region because absorption pattern is quite complex but unique for each organic structure. The vibrations for both the carbon-carbon and carbon-oxygen double bonds are identified at 6.1 and 5.8 μm, respectively.
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The chemical signs and the meaning
Answers
Answer:
Flame: Flammable materials or substances liable to self ignite when exposed to water or air (pyrophoric), or which emit flammable gas.
Flame
Flame
Exclamation Mark: An immediate skin, eye or respiratory tract irritant, or narcotic.
Exclamation Mark
Exclamation Mark
Gas Cylinder: Gases stored under pressure, such as ammonia or liquid nitrogen.
Gas Cylinder
Gas Cylinder
Corrosion: Materials causing skin corrosion/burns or eye damage on contact, or that are corrosive to metals.
Corrosion
Corrosion
Exploding Bomb: Explosives, including organic peroxides and highly unstable material at risk of exploding even without exposure to air (self-reactives).
Exploding Bomb
Exploding Bomb
Flame Over Circle: Identifies oxidizers. Oxidizers are chemicals that facilitate burning or make fires burn hotter and longer.
Flame Over Circle
Flame Over Circle
Skull and Crossbones: Substances, such as poisons and highly concentrated acids, which have an immediate and severe toxic effect (acute toxicity).
Skull and Crossbones
Skull and Crossbones
Environmental Hazard: Chemicals toxic to aquatic wildlife. (Non-Mandatory)
Explanation:
Determine the volume in ml of 0.524 m rboh(aq) needed to reach the half-equivalence (stoichiometric) point in the titration of 20.85 ml of 0.348 m acetic acid(aq). the ka of acetic acid is 1.8 x 10-5.
Answers
The volume of 0.524 M RbOH(aq) to reach the half equivalence point in the titration of 20.85 ml of 0.348 M acetic acid(aq) is 6.92 ml.
How to calculate the volume needed to reach half equivalence point?\(M_1\) = initial concentration = 0.348 M
\(M_2\) = concentration after diluting = 0.524 M
\(v_1\) = initial volume = 20.85 ml
Half equivalence point it means the equivalence point divided by two. The volume of the equivalence point can be calculated using laws of dilution. So,
\(M_1v_1\) = \(M_2v_2\)
\(v_2\) = \(\frac{M_1v_1}{M_2}\)
= (0.348*20.85)/0.524
= 13.85 ml
Since we want to calculate the half of equivalence so,
= 13.85 / 2
= 6.92 ml
Thus, the volume in ml needed to reach the half equivalence is 6.92 ml.
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Question 7 of 10 Which statement is the best description of a chemical bond? O A. A chemical bond holds atoms together. OB. A chemical bond connects 2 different molecules. OC. A chemical bond turns molecules into atoms. OD. A chemical bond identifies atoms in a molecule.
Answers
The best description of a chemical bond is A: "A chemical bond holds atoms together."
A chemical bond refers to the force of attraction between two or more atoms that holds them together to form a stable chemical compound. Atoms bond together by sharing, gaining, or losing electrons, resulting in the formation of molecules or compounds.
Chemical bonds are essential for the formation of substances and play a crucial role in determining the properties and behavior of matter. They involve the interaction of valence electrons, the outermost electrons in an atom, which are responsible for chemical bonding.
In summary, option A provides the most accurate and comprehensive description of a chemical bond, emphasizing its role in holding atoms together to form stable compounds. Therefore, Option A is correct.
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the binding of small effector molecules, protein-protein interactions, and covalent modifications are three common ways to modulate the activities of transcription factors. which of these three mechanisms are used by steroid receptors and by the creb protein?
Answers
Protein-protein interactions and effector molecule binding at steroid receptors; covalent modification and protein-protein interactions at CREB protein.
How a molecule is formed?A molecule is the term used to describe the aggregate of atoms that results from the formation of covalent bonds. Therefore, we might claim that a monomer is the most basic component of a covalent composite. In nature, oxygen exists as a molecule. Dioxygen is created when two oxygen atoms make a covalent triple bond with one another.
Is water a molecule?Molecules are created when atoms come together. 2 hydrogen (H) atoms one and oxygen (O) atom make up the three atoms that make up a water molecule. Because of this, water is occasionally abbreviated as H2O. There are billions of hydrogen atoms in an one drop of liquid.
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which of the following monomers is least likely to undergo cationic polymerization? propylene isobutylene vinyl acetate styrene methyl acrylate
Answers
Among the given monomers, vinyl acetate is least likely to undergo cationic polymerization.
Cationic polymerization is a type of polymerization reaction that involves the formation of a polymer by the sequential addition of cationic species.
In this process, the monomer molecules react with positively charged species, such as carbocations, to form the polymer chain.
Vinyl acetate (CH3COOCH=CH2) is a monomer that contains an ester functional group.
Cationic polymerization typically requires the presence of a reactive functional group, such as a carbon-carbon double bond or a carbon-oxygen double bond.
However, the ester functional group in vinyl acetate is less reactive towards cationic polymerization compared to other functional groups.
On the other hand, propylene (CH3CH=CH2), isobutylene (CH2=C(CH3)2), styrene (C6H5CH=CH2), and methyl acrylate (CH2=CHCOOCH3) all contain carbon-carbon double bonds that can readily undergo cationic polymerization.
These monomers are more likely to participate in cationic polymerization reactions because of the presence of a reactive carbon-carbon double bond.
In summary, among the given monomers, vinyl acetate is least likely to undergo cationic polymerization due to the presence of the ester functional group, while the other monomers are more suitable for cationic polymerization reactions because of the presence of carbon-carbon double bonds.
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please help i’m struggling
Answers
Answer:
Micro, milli, deci, deca, mega
Explanation:
the suffix each denote the amount in comparison to a liter
How many grams are in 6.4 moles of so2
Answers
6.4mole•64.06g/1mole=409.98g
which of the following are used to ways to illustrate the transfer of. matter and energy in an ecosystem? Mark 3 Answers
Answers
how many liters of a solution would be needed in a solution with a molarity of 10.5 and a 3.6 moles.
Answers
0.34L is the volume in liters of a solution that would be needed in a solution with a molarity of 10.5 and a 3.6 moles.
A measurement of three-dimensional space is volume. It is frequently expressed in numerical form using SI-derived units or different imperial or US-standard units (such the gallon, quart, and cubic inch). Volume and length (cubed) have a symbiotic relationship.
The volume much a container is typically thought of as its capacity, not as the amount of space it takes up. In other words, the volume is the volume of fluid (liquid or gas) that the container may hold.
Molarity = number of moles / volume of solution in liters
10.5 = 3.6 / volume of solution in liters
volume of solution in liters = 0.34L
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Will give brainliest
What is ozone depletion in simple words
Answers
Answer:
Ozone layer depletion is the thinning of the ozone layer present in the upper atmosphere. This happens when the chlorine and bromine atoms in the atmosphere come in contact with ozone and destroy the ozone molecules. One chlorine can destroy 100,000 molecules of ozone. It is destroyed more quickly than it is created
Answer:
Ozone depletion, gradual thinning of Earth’s ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. The thinning is most pronounced in the polar regions, especially over Antarctica. Ozone depletion is a major environmental problem because it increases the amount of ultraviolet (UV) radiation that reaches Earth’s surface, which increases the rate of skin cancer, eye cataracts, and genetic and immune system damage. The Montreal Protocol, ratified in 1987, was the first of several comprehensive international agreements enacted to halt the production and use of ozone-depleting chemicals. As a result of continued international cooperation on this issue, the ozone layer is expected to recover over time.
What's the chemical formula for disulfur decafluoride?
Answers
Answer:
I think it is this:
S₂F₁₀
Hope this helps :)
di = 2
deca = 10
A 951g sample of carbon steel with a specific heat capacity of .49j is heated to 673k and quenched in oil. The steel cools to 523k. assuming there is no heat lost to surroundings, calculate the heat absorbed by oil.
Answers
Answer: all I know it’s not -31.5 for ppl taking the k12 test
Explanation: I took the test
Answer:
its 69.9
Explanation:
yw
What are food molecules made out of?
Answers
Answer:
Most foods are made out of carbon, oxygen, nitrogen and hydrogen
Explanation:
3. The tensile strength of polymethyl methacrylate (PMMA) is about 65 MPa. This assumes the sample has perfect quality (no flaws). Calculate the tensile stress required to fail a tensile coupon that has a 0.5 mm crack on one side (see illustration below). Use the single edge notch plate model to calculate the geometric factor (Y). Assume the fracture toughness of PMMA is 1 MPa m¹/2 O 12.5 mm b 0.5 mm crack
Answers
The tensile stress required to fail a tensile coupon that has a 0.5 mm crack on one side is about 14.35 MPa.
Polymethyl methacrylate (PMMA) is a transparent thermoplastic often used as a lightweight or shatter-resistant alternative to glass. It is also used in casting, molding, and extrusion. The tensile strength of PMMA is roughly 65 MPa, but this value changes when a defect is present. The stress required to cause failure can be calculated using the single edge notch plate model to calculate the geometric factor Y.
The fracture toughness of PMMA is 1 MPa m¹/2, and the crack length is 0.5 mm. 12.5 mm is the width of the specimen.For a tensile coupon, the tensile stress required to fail it with a 0.5 mm crack on one side is calculated using the following formula:Stress = (K IC / Y √(πa)) × (b / W)where KIC is the fracture toughness, Y is the geometric factor, a is the crack length, b is the specimen width, and W is the specimen width. For a PMMA coupon with a 0.5 mm crack, a is 0.5/2 = 0.25 mm. Y = 1.12, according to the single edge notch plate model. Substituting the given values, the stress required to fail the coupon is:Stress = (1 MPa m¹/² / 1.12 √(π x 0.25 mm)) × (12.5 mm / 12.5 mm)≈ 14.35 MPa.
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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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In the chemical reaction, calcium carbonate (CaCO3) was heated to form two new
substances: calcium oxide (Cao) and carbon dioxide (CO2).
CaCO3 + CaO + CO2
A student heated 24.8 g of CaCO3. After the reaction, they measured 13.9 g of Cao.
What was the mass of the CO2 gas that escaped during the reaction?
38.79
O 1.78 g
0 24.8 g
10.99
Answers
Answer: 10.99
Explanation: because you take the Cao 13.9 and take CO2 which is 10.99 and it makes 24.8 . Which is CaCO3.
Decomposition reactions are the breakdown of chemical species into simpler parts. Decomposition reactions typically require energy input.
The mass of the CO2 gas that escaped = 10.99 g.
What is a decomposition reaction ?Decomposition reactions are the breakdown of chemical species into simpler parts. Decomposition reactions typically require energy input.When one reactant breaks down into two or more products, this is referred to as a decomposition reaction. This is represented by the following general equation: AB A + B. The breakdown of hydrogen peroxide to water and oxygen is an example of a decomposition reaction, as is the breakdown of water to hydrogen and oxygen.When one reactant breaks down into two or more products, this is referred to as a decomposition reaction. It is denoted by the general equation: AB A + B. In this equation, AB represents the reactant that initiates the reaction, and A and B are the reaction products.Molecular mass of CaO = 56.07 g
CO\(_2\) = 44.01 g
the mass of the CO2 gas that escaped = 13.9 x 44.01/ 56.07
= 10.99 g.
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where is the atomic number located
Answers
Answer:
The atomic number is located at the upper left of the element.
Hope this helps!! :)
For the following reaction:
KClO2-->KCl + O2
assign oxidation states to each element on each side of the equation.
I tried +5 for K, -1 for Cl and -4 for O on the reactants side, but my homework says it's wrong. Don't know what I'm doing wrong. I tried it again and only need help finding the oxidation number for Cl on the reactants side.Â
Answers
In summary, the oxidation states for each element in the reaction are:
KClO₂: K (+1), Cl (-1), O (-2)
KCl: K (+1), Cl (-1)
O₂: O (0)
To assign oxidation states to each element in the given reaction:
KClO₂ →KCl + O₂
Let's consider the oxidation states for each element on both sides of the equation:
Starting with the reactant side:
KClO₂:
Potassium (K) is an alkali metal, which typically has an oxidation state of +1.
Chlorine (Cl) in compounds is typically assigned an oxidation state of -1.
Oxygen (O) in compounds is generally assigned an oxidation state of -2, except in peroxides where it has an oxidation state of -1.
Therefore, the oxidation states for KClO₂are:
K: +1
Cl: -1
O: -2
Moving on to the product side:
2. KCl:
Potassium (K) is still assigned an oxidation state of +1.
Chlorine (Cl) is also assigned an oxidation state of -1.
Therefore, the oxidation states for KCl are:
K: +1
Cl: -1
O₂:
Oxygen (O) in its elemental form is assigned an oxidation state of 0 since it is uncombined.
Therefore, the oxidation state for O₂ is:
O: 0
In summary, the oxidation states for each element in the reaction are:
KClO₂: K (+1), Cl (-1), O (-2)
KCl: K (+1), Cl (-1)
O₂: O (0)
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2 Redondea
Dadas las siguientes operaciones, redondealas
correctamente
a 150. 00 / 8. 65
b) 34. 045 + 205
Answers
a) Para redondear correctamente la división 150.00 / 8.65, debemos seguir las reglas de redondeo. En este caso, nos fijaremos en el segundo decimal después del punto. Si el tercer decimal es igual o mayor a 5, se redondea hacia arriba; de lo contrario, se redondea hacia abajo. En este caso, el tercer decimal es 0, por lo que redondeamos hacia abajo. Entonces, el resultado redondeado sería 17.34.
b) En la suma 34.045 + 205, debemos redondear correctamente el resultado. Como no se especifica la cantidad de decimales requeridos, asumiremos que se debe redondear al segundo decimal. La regla establece que si el tercer decimal es mayor o igual a 5, se redondea hacia arriba; de lo contrario, se redondea hacia abajo. En este caso, el tercer decimal es 5, por lo que redondeamos hacia arriba. Entonces, el resultado redondeado sería 239.05.
En resumen, la división 150.00 / 8.65 redondeada correctamente es 17.34, y la suma 34.045 + 205 redondeada correctamente es 239.05.
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