Advertisements
Advertisements
प्रश्न
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
उत्तर
Molecular mass of Mg3N2
= (3 × 24) + (2 × 14)
= 72 + 28
= 100
APPEARS IN
संबंधित प्रश्न
Calculate the molecular mass of H2.
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
Define 'molecular mass' of a substance.
Calculate the molecular masses of the following compounds :
Ethyne, C2H2
(Atomic masses : C = 12 u ; H = 1 u)
How many moles are there in 34.5 g of sodium ? (Atomic mass of Na = 23 u)
The mass of one molecule of a substance is 4.65 × 10–23 g. What is its molecular mass ? What could this substance be ?
Calculate the weight/mass of: `10^22` atoms of carbon
Molar mass of CO2 is 42g.
Calcium carbonate is decomposed on heating in the following reaction
CaCO3 → CaO + CO2
How many moles of CO2 are there in this equation?