Concentration and Molarity

Concentration and Molarity

10th Grade

15 Qs

quiz-placeholder

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Concentration and Molarity

Concentration and Molarity

Assessment

Quiz

Science

10th Grade

Practice Problem

Hard

NGSS
MS-PS1-4, HS-PS1-5

Standards-aligned

Created by

Lisa Thompson

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is the correct formula for calculating molarity?

moles/liters of solution

moles/kg of solvent

# particles/Avogadro's #

theoretical yield/actual yield

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?

1074 mol

0.069 mol

1.07 mol

62.7 mol

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the molarity of 4 grams of sodium chloride in 3,800 mL of solution?

0.018 M

0.018 mol

1.052 M

1.052 mol

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The concentration of a mixture can be increased in which of the following ways?

Heating the mixture

Adding more water “solvent”

Adding more powder “solute”

Stirring the mixture

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which solution is more concentrated?

Solution 1

Solution 2

They have the same concentration

I have no idea

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Calculate the mass percent of solution, if there is 100 g of sugar and 400 g of water

30

25

20

15

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A student is preparing solutions for a laboratory experiment by dissolving solid solutes in liquid solvents. Which action will increase the rate of solubility

lowering the temperature of the solvent

stirring the solute in the solution

increasing the pressure on the solution

increasing the particle size of the solute

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