Advertisements
Advertisements
प्रश्न
Convert 12 g of oxygen gas into moles.
उत्तर
Gram molecular mass of O2 = 32 g
mass of oxygen gas given = 12 g
Therefore, 32 g of O2 = 1 mole of O2
So, 12 g of O2 = `12/32` moles of O2
Hence, 12 g of oxygen contains 0.375 moles of oxygen.
APPEARS IN
संबंधित प्रश्न
Calculate the molecular mass of CH3OH.
Calculate the molecular mass of nitric acid, HNO3. (Atomic masses : H = 1 u ; N = 14 u ; O = 16 u)
Calculate the molecular masses of the following compounds :
Carbon disulphide, CS2
(Atomic masses : H = 1 u ; S = 32 u ; C = 12 u)
Calculate the molecular masses of the following compounds :
Ethane, C2H6
(Atomic masses : C = 12 u ; H = 1 u)
How many molecules are present in one gram molecular mass of a substance ?
What is meant by the ‘molar mass’ of a substance ? State the unit in which molar mass is usually expressed.
Calculate the molecular mass of the following:
(NH4)2CO3
Given atomic mass of Cu = 63·5, H = 1, O= 16, C = 12, N = 14, Mg = 24, S = 32
Calculate the molecular mass of the following:
Na2SO4.10H2O
Given atomic mass of Cu = 63·5, H = 1, O = 16, C = 12, N = 14, Mg = 24, S = 32
Calcium carbonate is decomposed on heating in the following reaction
CaCO3 → CaO + CO2
How many moles of CO2 are there in this equation?
What are ionic and molecular compounds? Give examples.
