A solution of hydrochloric acid is labeled as 60% (m/v). The density of the solution is 1.1 g ml^-1. Calculate the concentration of the solution in % (m/m).

Important Questions on Is Matter Around Us Pure?

MEDIUM

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>CHECK YOUR PROGRESS>Q 2

A solution of potassium chloride in water is 35% (m/v). The density of the solution is 1.2 g mL^-1. Calculate the concentration of the solution in % (m/m).

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>CHECK YOUR PROGRESS>Q 3

The concentration of all salts present in sea water is 3.52% (m/v). Calculate the volume of sea water which on evaporation will produce 5 kg of salts.

HARD

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>CHECK YOUR PROGRESS>Q 4

18-carat gold contains 18 parts of gold and 6 parts of copper by mass. Calculate the concentration of gold and copper in 18-carat gold in % (rn/m).

MEDIUM

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>CHECK YOUR PROGRESS>Q 5

20 g of sodium chloride is dissolved in water to make up the volume of the solution to 250 mL. Calculate the mass by volume percentage of sodium chloride in the solution.

MEDIUM

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>CHECK YOUR PROGRESS>Q 6

A solution has been prepared by mixing 8.5 mL of ethanol with 80 mL of water. Calculate the volume percentage of the solution.

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 2 - Is Matter Around Us Pure?>CHECK YOUR PROGRESS>Q 7

A solution contains 20 g of urea in 125 g of solution. Calculate the mass percentage of the solution.

EASY

9th CBSE