When ammonia reacts with hydrogen chloride gas, it produces white fumes of ammonium chloride. The volume occupied by NH₃ in glass bulb A is three times more than the volume occupied by HCl in glass bulb B at STP.

i) How many moles of ammonia are present in glass bulb A?

ii) How many grams of NH₄Cl will be formed when the stopper is opened?

(Atomic mass of N = 14, H = 1, Cl = 35.5)

iii) Which gas will remain after completion of the reaction?

iv) Write the chemical reaction involved in this process.

Fill in the blanks using the given data:

The formula of Calcium oxide is CaO. The atomic mass of Ca is 40, Oxygen is 16 and Carbon is 12.

i) 1 mole of Ca ( ____g) and 1 mole of Oxygen atom ( ___g) combine to form _____mole of CaO ( ____g).

ii) 1 mole of Ca ( ___g) and 1 mole of C ( ___g) and 3 moles of Oxygen atom ( ___g) combine to form 1 mole of CaCO₃ ( ___g)

How many grams are there in:

i) 5 moles of water

ii) 2 moles of Ammonia

iii) 2 moles of Glucose

Nitro glycerine is used as an explosive. The equation for the explosive reaction is

4C₃H₅((NO₃))₃12CO₂ + 10H₂O + 6N₂ + O₂

(l) (g) (l) (g) (g)

(Atomic mass of C = 12, H = 1, N = 14, O=16)

1. How many moles does the equation show for i) Nitroglycerine ii) gas molecules produced?

2. How many moles of gas molecules are obtained from 1 mole of nitroglycerine?

3. What is the mass of 1 mole of nitroglycerine?

Sodium bi carbonate breaks down on heating:

2NaHCO₃ Na₂CO₃ + H₂O + CO₂

(Atomic mass of Na = 23, C = 12, H = 1, O=16)

i) How many moles of sodium bi carbonate are there in the equation?

ii) What is the mass of sodium bicarbonate used in this equation?

iii) How many moles of carbon dioxide are there in this equation?