1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nadusha1986 [10]
2 years ago
11

Two unknown molecular compounds were being studied. A solution containing 5.00 g of compound A in 100. g of water froze at a low

er temperature than a solution containing 5.00 g of compound B in 100. g of water. Which compound has the greater molar mass? Explain how you arrived at your answer.
Chemistry
1 answer:
Shtirlitz [24]2 years ago
7 0

Answer:

Compound B.

Explanation:

The freezing point depression is a colligative property. It depends on the number of particles (moles) present in the solution.

\Delta T_{\text{f}} = K_{\text{f}} b

where b is the molal concentration

b = \dfrac{\text{moles of solute}}{\text{kilograms of solvent}}\\\\n = \dfrac{\text{mass}}{\text{molar mass}} = \dfrac{m}{M}

If m is constant (5 g), then

n \propto \dfrac{1}{M}

The compound with the greater molar mass has fewer moles and therefore fewer particles to depress the freezing point.

That must be Compound B, because Compound A has the lower freezing point.

You might be interested in
If molecules move from one place to another inside of a cell, which type of communication is this?
Arada [10]
Hello there.

<span>If molecules move from one place to another inside of a cell, which type of communication is this?

</span><span>C.intracellular, enzyme-linked receptor.
</span>
8 0
3 years ago
How many carbon atoms are there in 15 lbs of sugar, C12H22O11?
alexira [117]

Answer:

A molecule of sucrose (C12H22O11) has 12 carbon atoms, 22 hydrogen atoms and 11 oxygen atoms.

Explanation:

if this does not help let me know :)

5 0
3 years ago
True or false?
sertanlavr [38]
The answers are :
1 - F
2- T
5 0
2 years ago
Read 2 more answers
Most plants and all animals depend on _____ to meet their need for nitrogen.
kirill115 [55]
They depend on nitrogen-fixing bacteria, which convert atmospheric nitrogen into a usable form.
3 0
3 years ago
Read 2 more answers
What is the mass in grams of 3x10 atoms of helium
Zepler [3.9K]

Answer:

here

Explanation:

What is the total mass of $$3.01 x 10^23$$ atoms of helium gas?

✓ Well $$"Avogadro's number"$$ of helium atoms has a mass of $$4.0*g$$. Explanation: And $$"Avogadro's number"$$

3 0
3 years ago
Other questions:
  • What is the concentration of a 0.750 l solution that contains 52.0 g of glucose (c6h12o6)?
    7·1 answer
  • A homogenous mixture of two or more substances is known as a(n) Select one: a. element b. compound c. solution d. atom
    15·1 answer
  • A 3.301 mass % aqueous solution of potassium hydroxide has a density of 1.05 g/mL. Calculate the molality of the solution. Give
    14·1 answer
  • Give the ΔH value for the combustion of butane as shown in the reaction 2C4H10(g)+13O2(g)→8CO2(g)+10H2O(g)+5315 kJ.
    13·2 answers
  • Based on the data shown in the graph, what would be
    13·2 answers
  • Pt5 science......<br><br> Select correct answer ♡ !
    12·2 answers
  • The elements of a group have the same number of
    7·1 answer
  • What is the best color? Personally I think its purple.
    11·2 answers
  • When 20 grams of potassium chlorate is dissolved in 100 grams of water
    12·1 answer
  • 7. Which of the following elements is diatomic?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!