indicate which aqueous solution has the highest boiling point. question 6 options: 0.1 m libr 0.1 m nh4no3 0.2 m koh 0.2 m c6h12o6 0.2 m na2co3
Answers
carbon tetrachloride has the highest boiling point.
Carbon tetrachloride is also known by many other names (such as tetrachloromethane) by IUPAC name.
The boiling point elevation of a liquid or a compound is defined as the boiling point of a liquid that is that will be higher when some other compound is added. It means that the solution has a higher boiling point than the solvent.
When a nonvolatile solute is added to a pure solvent like water, it results in the highest boiling point elevation.
Carbon tetrachloride, Kb = 5.03°C/m shows the highest boiling point elevation when it is used to make a 0.10 m non - electrolyte solution.
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Related Questions
a chemical that allows for communication between one cell and another is a
Answers
A chemical that allows for the communication in between the one cell and another is a neurotransmitter.
The Neurotransmitters are the chemicals the type of the messenger that is used to transmit information from the one cell to the next cell. Some of the hormones are also called as the messenger chemicals. The nerve cells that are not linked with each other and they are separated from the each other by the space known as synapses. The electric potential signal that is converted into the chemical signal through the release of the neurotransmitters.
Thus, the neurotransmitter , is the chemical that allows for the communication between one cell and another .
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How many moles are in 14.0156 grams of C3H12?
Answers
Answer:
Explanation:
Molar Mass of C3H12 (I don't think this chemical exists anywhere but on paper so I'll solve it that way, but check to see if you have written the question correctly.)
3C = 3 * 12 = 36
12*H = 12*1 = 12
Total = 48 grams
mols = given mass / molar mass
Given mass = 14.0156 grams
Molar mass = 48 grams
moles = 14.0156 / 48
mols = 2.900 mols
Notes
When you enter your answer, be sure and include the zero for sig digs.You must clean up my numbers (make them more accurate) using your periodic table.I want to see how the temperature of water affects the speed of rusting. What is the Independent Variable
Answers
The Independent Variable is the temperature of water.
If 12.3 mol HCl are produced in this reaction, how many grams of sodium sulfate are produced?
Answers
ANSWER
The mass of Na2SO4 is 874g
EXPLANATION
Given that;
The number of moles of HCl is 12.3 mol
Follow the steps below to find the mass of sodium sulfate produced
Step 1; Write a balanced equation for the reaction
\(\text{ 2NaCl + H}_2SO_4\text{ }\rightarrow\text{ 2HCl + Na}_2SO_4\)In the reaction above, 2 moles of NaCl react with 1 mole of H2SO4 to give 2 moles of HCl and 1 mole of Na2SO4
Let the number of moles of Na2SO4 be x
\(\begin{gathered} \text{ 2 moles HCl }\rightarrow\text{ 1 mole Na}_2SO_4 \\ \text{ 12.3 moles HCl }\rightarrow\text{ x moles Na}_2SO_4 \\ \text{ Cross multiply} \\ \text{ 2 moles HCl }\times\text{ x moles Na}_2SO_4\text{ }=\text{ 1 mole Na}_2SO_4\text{ }\times\text{ 12.3 mole HCl} \\ \text{ Isolate x} \\ \text{ }\times\text{ }=\text{ }\frac{1\text{ mole Na}_2SO_4\times12.3mol\cancel{HCl}}{2moles\cancel{HCl}} \\ \text{ } \\ \text{ x = }\frac{1\text{ }\times\text{ 12.3}}{2} \\ \text{ x = 6.15 moles} \end{gathered}\)The number of moles of Na2SO4 is 6.15 moles
Step 3; Find the mass of Na2SO4 using the below formula
\(\text{ mole = }\frac{\text{ mass}}{\text{ molar mass}}\)Recall, that the molar mass of Na2SO4 is 142.04 g/mol
\(\begin{gathered} \text{ mass = mole }\times\text{ molar mass} \\ \text{ mass = 6.15 }\times\text{ 142.04} \\ \text{ mass = 873.546} \\ \text{ mass = 874g Na}_2SO_4 \end{gathered}\)Therefore, the mass of Na2SO4 is 874g
Use the food web below to answer the following
question.
Frog
Red fox
Grasshopper
Weasel
Goldfinch
Great horned om
Clover
Deer mouse
Which group is not represerted in the food web?
A. producers
B. primary consumers
C. secondary consumers
D. decomposers
Answers
Answer:
uhm i believe its D hope i helped
Explanation:
Answer:
D. decomposers
Rank the following aqueous solutions from lowest predicted boiling point to highest: In the case of solutions containing aqueous ions, assume there is no ion clustering in the solution:
1. 1.67 mCHOH
2. 0.530 mNa2SO4
3. 0.475 mK3PO4
4. 0.907 mKBr
5. 0.722 mNH4NO3
a. highest
b. lowest
Answers
The order of the aqueous solutions from the lowest boiling point to the highest highest is :
NH₄NO₃ < Na₂SO₄ < CH₃OH < KBr < K₃PO₄
The highest the concentration of the solute particles , the higher the boiling point.
The dissociation of the K₃PO₄ is :
K₃PO₄ ---> 3K⁺ + PO₄³⁻
The molarity of the K₃PO₄ = 0.475 M
The molarity of the ions = 4 × 0.475 M
The molarity of the ions = 1.9 M
Thus the K₃PO₄ is the highest boiling point.
The order of the boiling point from the lowest to the highest boiling point is as follows :
NH₄NO₃ < Na₂SO₄ < CH₃OH < KBr < K₃PO₄
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Using the rules for significant figures, what do you get when you multiply 67.6 by 1.2?
Answers
Answer:
The answer should have as many significant figures as the lowest number used in the multiplication, which is 1.2 .
Balance the folowing equation.
S + 02
ws
SO:
Answers
Answer:
s+o2=so2
Explanation:
i hope it will help u
Calculate the mass in grams of 3.50 x 106 mol of UF6
Answers
Answer: 647,000 g or 6.47x10^5 g
Explanation:
find the molar mass of UF6 which is 352.02g/mol
multiply 3.50x10 ^6 mol by the 352.02 g/mol which gives you 647,106,26 g
round to 3 sig figs gives you 647,000g
3.50x10 ^6 mol UF6 (352.02 g/mol UF6 / 1 mol UF6) = 6.47x10^5 g
What are the names of the products in the chemical equation shown below
Answers
Answer:
Yea I don't see any answers below but when you do I would love to help too!
Explanation:
the material through which mechanical waves travel is the what
Answers
Answer:
the medium
Explanation:
that is what medium is
Answer:
A medium.
Explanation:
A medium is a material that waves can travel through. A medium can be in the form of a solid, a liquid, or a gas.
(I did the quiz btw!!)
F 1.00 \(\rm mol\) of argon is placed in a 0.500-\(\rm L\) container at 21.0 \({\rm \, ^{\circ}C}\) , what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation)? For argon, \(a = 1.345 \;\rm (L^2\cdot atm)/mol^2\) and \(b = 0.03219\; \rm L/mol\).
Answers
Answer:
2.05 atm
Explanation:
From ideal gas equation;
PV=nRT
Making P the subject of the formula;
P= nRT/V
Substituting values;
P= 1 × 0.0821 × 294/ 0.5
P= 48.27 atm
Real gas pressure;
(P + an^2/v^2) . (V - nb) = nRT
(P + 1.345 × 1^2/0.5^2) . (0.5 - 1 × 0.03219) = 1 × 0.0821 × 294
(P + 5.38) . (0.46781) = 24.1374
(P + 5.38) = 24.1374/0.46781
(P + 5.38) = 51.5966
P= 51.5966 - 5.38
P= 46.22 atm
Difference = Pideal - Preal
Difference = 48.27 - 46.22
Difference = 2.05 atm
A Carnot cycle operates between the temperatures limits of 400 K and 1600 K, and produces 3600 kW of net power. The rate of entropy change of the working fluid during the heat addition process is
Answers
The rate of entropy change:
The rate of entropy change of the working fluid during the heat addition process is 3 kW/K
What is the Carnot cycle?
The Carnot Cycle is a thermodynamic cycle made up of reversible isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression processes in succession. The ratio of the heat absorbed to the temperature at which the heat was absorbed determines the change in entropy.The entropy of a system:
The rate of heat addition is expressed as,
Q = \(\frac{WT_{H}}{T_{H}- T_{L}}\)
The entropy of a system is a measure of how disorderly a system is getting. The rate of entropy generation during heat addition is,
\(S_{gen} = \frac{Q}{T_{H}} = \frac{W}{T_{H} - T_{L}}\)
Calculation:
Given:
\(T_{L}\) = 400K
\(T_{H}\) = 1600K
W = 3600 kW
Put all the values in the above equation, and we get,
\(S_{gen} = \frac{W}{T_{H} - T_{L}}\) = \(\frac{3600}{1600-400}\) = 3 kW/K
The rate of entropy change is 3 kW/K
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4) What is the density of a metal block that has a mass of 270 grams and has a length of 5 cm, width of 3
cm, and a height of 2 cm
Answers
Answer:
P=9
Explanation:
Formula: P = M/V
First, we need to find the volume. This can be done by: 5 x 3 x 2 which will give us 30
Now we can plug it in
P= 270/30
P=9!
circulating energy substrates include glucose, fatty acids and amino acids, as well as ketone bodies and ______.
Answers
Answer: lactate
Explanation:
The missing circulating energy substrate is lactate. Lactate is a product of anaerobic metabolism and can serve as an energy source in certain conditions, such as during intense exercise or in tissues with high glycolytic activity. It can be converted back into glucose through a process known as the Cori cycle and utilized as an energy substrate by various tissues in the body.
excpeted value for the standard enthalpy of formation from magnesium oxide
Answers
The standard enthalpy of formation (∆Hf°) is the enthalpy change when one mole of a compound is formed from its constituent elements in their standard states.
Enthalpy is a fundamental concept in thermodynamics that measures the total heat content of a system at constant pressure. It is denoted by the symbol H and is defined as the sum of the internal energy (U) of a system and the product of the pressure (P) and volume (V) of the system.
Enthalpy can be thought of as a measure of the energy stored within a system, including both the internal energy and the work done by or on the system. It is particularly useful in studying chemical reactions and phase transitions, where it helps us understand the heat flow and energy changes involved. In chemical reactions, the enthalpy change (∆H) provides insights into the heat released or absorbed during the reaction.
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be strong
Hey now, life is every minute
All or nothing
Living on the limits
Hey now, I will sing it loud and sing it strong
Let the echo decide if I was right or wrong
tie your shoe lace get prepared for a race
And a very few feel burn,
And the rest, they may live and learn!
but who knows the world hurts and theres different parts yeah be strong.
Answers
Nice written.
Is it written by you yourself or you have copied it from somewhere?
what type of reaction is iron oxide
Answers
Answer:
Water and oxygen
Explanation:
The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust
Answer:
Explanation:
Iron oxide is also called ferric oxide is an inorganic compound with the chemical formula Fe2O3.
It occurs in nature very abundantly and widely distributed. It is a chemical complexes which occur naturally comprising iron and oxygen. Iron oxide are vital to humans and useful in most geological and biological activities. This iron oxide may be required for investigations of their own particular properties or used as starting materials for other processes.
What is an orbital ? I need this ASAP :)
Answers
Determine the mass of zirconium_______________, silicon__________________, and oxygen________________, found in 0.3384 mol of zircon, ZrSiO4, a semiprecious stone. Your answer must have the correct number of significant figures.Enter the number only, with no units.
Answers
1) Determine the mass of zirconium
Convert moles of zircon into moles of zirconium
\(\text{molesofZr}=0.3384molesofZrSiO_4\cdot\frac{1\text{molofZr}}{1molofZrSiO_4}=0.3384\text{molesofZr}\)Convert moles of zirconium into mass of zirconium (g)
\(\text{gramsofZr}=0.3384\text{molesZr}\cdot\frac{91.224\text{ g Zr}}{1\text{molofZr}}=30.87\text{ g Zr}\)2) Determine the mass of Silicon
Convert moles of zircon into moles of silicon
\(\text{molesofSi}=0.3384molesofZrSiO_4\cdot\frac{1\text{molofSi}}{1molofZrSiO_4}=0.3384\text{molesofSi}\)Convert moles of silicon into mass of silicon (g)
\(\text{gramsofSi}=0.3384\text{molesofSi}\cdot\frac{28.085\text{ g of Si}}{1\text{molofSi}}=9.504\text{ g Si}\)3) Determine the mass of Oxygen
Convert moles of zircon into moles of oxygen
\(\text{molesofO}=0.3384molesofZrSiO_4\cdot\frac{4\text{molofO}}{1molofZrSiO_4}=1.3536\text{molesofO}\)Convert moles of oxygen into mass of oxygen
\(\text{gramsofO}=1.3536\text{molesofO}\cdot\frac{15.999\text{ g O}}{1\text{mol of O}}=21.66gO\)The mass of zirconium is 30.87 g
The mass of silicon is 9.504 g
The mass of oxygen is 21.66 g
Can someone plz help me :<
Answers
Answer: cats r alliens because they r kind of like ufos they would usually wonder around rather u know it or not when they spy on us it could b with us sleep cooking anything so they r like aliens
Explanation:
the table gives the composition of three particles
(a) what is the evidence in the table for each of the following?
(i)Particle A is an atom
(ii) A,B and C are all particles of the same element.
(iii) Particles A and C are isotopes of the same element.
(b) (i) What is the electronic structure of particle A?
(ii) Is element A , a metal or non-metal? Give a reason for your choice
Answers
The evidence in the table for each of the following atoms of an element A, B, and C is that A,B, and C are all particles of the same element; option ii.
What are elements?Elements are substances that are composed entirely of the same atoms and which cannot be split into simpler units by an ordinary chemical process.
Atoms of the same element have the same number of protons or the same atomic number.
However, atoms of the same element may have different numbers of neutrons, and these atoms of the element are called isotopes.
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1. Friction acts in a direction
to the
direction of an object's motion.
a. unrelated
b. opposite
c. equal
d. perpendicular
Answers
Friction acts in the opposite direction to the direction of an object's motion. Therefore, option (b) is correct.
What is Friction?Friction can be defined as the resistance provided by the surfaces that are in contact when they pass over each other. Friction offers the traction that is required to walk without slipping.
Friction can be described as a force that is dependent on external factors. Friction depends upon the nature of the two surfaces that are in contact and on the smoothness or roughness of the two contacted surfaces. When one body moves over the surface of another, these irregularities on the surface of the bodies get entangled and develop friction.
Friction depends upon the force that is exerted on these surfaces and increases when the force is applied along with the irregularities. Types of Friction are Rolling friction, Static friction, Sliding friction, and Fluid friction.
The force of friction acts in the opposite direction to the direction of an object's motion.
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Find a1 of this geometric sequence:
d = 6 and s8 = 440
s8 is the sum of the first 8 terms
d is the common difference
Answers
The first term (a₁) of the geometric sequence can be calculated as 20.
Determine the geometric sequence?In a geometric sequence, each term is found by multiplying the previous term by a constant ratio. The formula to find the sum of the first n terms (Sn) of a geometric sequence is given by:
Sn = a₁ * (1 - rⁿ) / (1 - r)
where a₁ is the first term, r is the common ratio, and n is the number of terms.
In this case, we are given that d (common difference) is 6 and s8 (sum of the first 8 terms) is 440. To find the first term a₁, we need to manipulate the sum formula.
Using the formula for the sum of the first 8 terms, we can write:
440 = a₁ * (1 - r⁸) / (1 - r)
We are not given the common ratio directly, but we can derive it using the common difference (d). In a geometric sequence, the common ratio (r) is found by taking the dth root of 1, where d is the common difference. In this case, r = √1 = 1.
Now, substituting r = 1 in the sum formula, we have:
440 = a₁ * (1 - 1⁸) / (1 - 1)
440 = a₁ * 0 / 0
Since we have 0/0, it means the equation is indeterminate, and any value of a₁ can satisfy the equation. Therefore, there is no unique solution for the first term (a₁).
Therefore, the initial term (a₁) of the geometric sequence can be determined as 20.
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At most, how many covalent bonds can a phosphorous atom form?
(A) 1
(B2
(C)3
(D)4
Answers
Answer:
(c)
Explanation:
in both black and red
Answer:
I think 3 im am not sure
Explanation:
examine the diagram of the cell which or general is marked with an X help
Answers
Answer:
I'm pretty sure it's the cell membrane
Which is more reliable - using a manual stopwatch or using light gates?
Answers
Answer:
Light gates
Explanation:
Light gates are used because of their accuracy. They can be set to react very quickly when the beam is broken which eliminates human reaction time errors.
If an element has an atomic number of 35 and an atomic mass of 84, how many protons does this element have?
Answers
Answer:
35
Explanation:
because the atomic number is the same as the protons numberQuestion and Answer Options on Photo
Help!
ZOoM in if needed :) Thank u
Answers
Answer:
my sister said that the answer would be letter b
she is mostly right but she was a lil stumped at this question
Explanation:
what gas has a solubility of 26 g per 100 g of water at 56 °c
Answers
The gas that has a solubility of 26 g per 100 g of water at 56°C is ammonia (NH3).
Ammonia is a colorless gas with a pungent odor and is commonly used in fertilizer production, refrigeration, and as a cleaning agent. It dissolves in water to form ammonium hydroxide, and its solubility increases with increasing temperature. At 56°C, the solubility of ammonia in water is 26 g per 100 g of water.
Ammonia (NH3) is a versatile compound that has many uses in industry, agriculture, and households. Some of its common uses include:
Fertilizer production: Ammonia is used to produce nitrogen-based fertilizers,
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