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1. | Calculate the mass of 0.3 mole of aluminium (atomic mass of Al=27). |
Data:
Given moles of aluminium = 0.3 mole
Atomic mass of aluminium = 27
Formula:
Solution:
By substituting the values to the above formula, we get,
Hence, the mass of 0.3 mole of aluminium =8.1 g
2. | Calculate the mass of 2.24 litre of SO_2 gas at STP. |
Data:
Given volume of SO_2=2.24 L
Atomic mass of S=32
Atomic mass of O=16
Solution:
By substituting the values in the above formula, we get,
Hence, the mass of 2.24 litre of SO_2=6.4 g