ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 24

EASY

11th ICSE

IMPORTANT

Earn 100

Calculate the percentage by mass of chromium in each of the following oxides.

${Cr}_{2} O_{3}$

Important Questions on Some Basic Concepts of Chemistry

EASY

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 24

Calculate the percentage by mass of chromium in each of the following oxides.

${CrO}_{3}$

HARD

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 25

An element X forms four oxides having percentages of X equal to

77.4 %, 63.2 %, 69.6 %

and

72.0 %

. Verify law of multiple proportions.

MEDIUM

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 25

A solution of glucose in water is labelled as

10 % (w / W)

. The density of the solution is

1.20 g {mL}^{- 1}

. Calculate molarity.

MEDIUM

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 1 - Some Basic Concepts of Chemistry>Chapter Practice>Q 25

A solution of glucose in water is labelled as

10 % (w / W)

. The density of the solution is

1.20 g {mL}^{- 1}

. Calculate molality.