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Grade 10 Solution Concentration (Molarity) Worksheet with Answers

Grade 10 (US) · Year 11 (UK) · Class 10 (India) · Chemistry

Unit 4: Solutions, Acids & GasesSolutionsNGSS HS-PS1-5

Calculating molarity and how much solute is needed to make a solution. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

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Solution Concentration (Molarity)

Grade 10 · Chemistry

Score___ / 12

Name

Class

Date

Learning goal: Solutions · NGSS HS-PS1-5

Directions: Read each question carefully and write your answer on the line.

Example

1 mol of solute is dissolved to make 1 L of solution. What is the molarity?

Answer: 1 M

RememberChemistry tool kit

Molar massadd atomic massesH₂O = 2(1) + 16 = 18 g/molmoles = mass ÷ molar massn = m ÷ MMolarity M = mol ÷ Lconcentration of a solution
  1. 1

    3 mol of solute is dissolved to make 0.5 L of solution. What is the molarity?

  2. 2

    0.5 mol of solute is dissolved to make 0.25 L of solution. What is the molarity?

  3. 3

    2 mol of solute is dissolved to make 0.5 L of solution. What is the molarity?

  4. 4

    How many moles of solute are in 0.5 L of a 0.5 M solution?

  5. 5

    0.25 mol of solute is dissolved to make 1 L of solution. What is the molarity?

  6. 6

    How many moles of solute are in 0.25 L of a 2 M solution?

  7. 7

    How many moles of solute are in 2 L of a 0.25 M solution?

  8. 8

    How many moles of solute are in 2 L of a 1 M solution?

  9. 9

    2 mol of solute is dissolved to make 0.25 L of solution. What is the molarity?

  10. 10

    How many moles of solute are in 1 L of a 1 M solution?

  11. 11

    How many moles of solute are in 0.25 L of a 12 M solution?

  12. 12

    0.25 mol of solute is dissolved to make 0.5 L of solution. What is the molarity?

★ Challenge corner for fast finishers

You are in a closed room with a candle, a match and a lamp. What do you light first?

How did I do?

Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/chemistry/10/molarity

Answer key (click to show)
  1. 1.6 M
  2. 2.2 M
  3. 3.4 M
  4. 4.0.25 mol
  5. 5.0.25 M
  6. 6.0.5 mol
  7. 7.0.5 mol
  8. 8.2 mol
  9. 9.8 M
  10. 10.1 mol
  11. 11.3 mol
  12. 12.0.5 M
  13. ★the match (challenge corner)

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