Formula Mass

Q.

Magnesium and chlorine atoms combine in the ratio of 1:2 to form one molecule of magnesium chloride.

1. True

2. False

Q.

The ratio in which calcium and chlorine atoms combine to form 1 molecule of ${\text{CaCl}}_2$ is

1. 1:1

2. 1:2

3. 1:3

4. 1:4

Q.

The ratio in which sodium and chlorine atoms combine to form 1 molecule of NaCl is

1. 1:1

2. 1:2

3. 2:1

4. 1:3

Q.

Explain the structures of (a) Hydronium ion, and (b) Ammonium ion.

Q.

The ratio of positive ions to negative ions in calcium chloride is

1. 1:1

2. 1:2

3. 2:1

4. 2:2

Q.

The scientist who first proposed that all acids contain hydrogen ions?

Q. The formula unit mass of $N{a}_{2}O$ is u.

1. 50
2. 62
3. 52

Q. What is the molecular mass of sulphur dioxide.

Q.

The ratio in which hydrogen and chlorine atoms combine to form 1 molecule of HCl is

1. 2:1

2. 1:2

3. 1:1

4. 1:3

Q.

Write the formula of Phosphorous pentaoxide.

Q.

Write the symbols of cation and anion present in MgO?