Advertisements
Advertisements
Question
Calculate the molecular mass of the following:
Mg3N2
Given atomic mass of Cu = 63·5, H = 1, O = 16, C = 12, N = 14, Mg = 24, S = 32
Advertisements
Solution
Molecular mass of Mg3N2
= (3 × 24) + (2 × 14)
= 72 + 28
= 100
APPEARS IN
RELATED QUESTIONS
Calculate the molecular mass of CH4.
Calculate the molecular mass of NH3.
Calculate the formula unit mass of Na2O given the atomic mass of
- Zn = 65 u
- Na = 23 u
- K = 39 u
- C = 12 u
- O = 16 u
From the equation:
\[\ce{C + 2H2SO4 -> CO2 + 2H2O + 2SO2}\]
Calculate:
- the mass of carbon oxidized by 49 g of sulphuric acid (C = 12, relative molecular mass of sulphuric acid = 98)
- the volume of sulphur dioxide measured at STP, liberated at the same time.
(Volume occupied by 1 mole of a gas at STP is 22.4 dm3).
Calculate the molecular mass of the following:
CuSO4·5H2O
Given atomic masses of Cu = 63·5, H = 1, O = 16, C = 12, N = 14, Mg = 24, S = 32
Choose the correct answer from the options given below.
In water, the hydrogen-to-oxygen mass ratio is
Calculate:
The volume of 4g of H2 at 4 atmosphere.
Calculate the relative molecular mass of ZnCO3.
[Zn = 65, O = 16, C = 12]
Write the formulae for the following and calculate the molecular mass for each one of them.
- Caustic potash
- Baking powder
- Limestone
- Caustic soda
- Ethanol
- Common salt
Write the name of the following compound and deduce its molecular mass.
K2CO3
