Advertisements
Advertisements
Question
Calculate the molecular mass of nitric acid, HNO3. (Atomic masses : H = 1 u ; N = 14 u ; O = 16 u)
Advertisements
Solution
Given:
Atomic mass of H = 1 u
Atomic mass of N = 14 u
Atomic mass of O = 16 u
Therefore, molecular mass of HNO3 can be calculated as follows:
(1 × 1) + (1 × 14) + (3 ×16) = 63
Hence, molecular mass of nitric acid is 63 u.
APPEARS IN
RELATED QUESTIONS
Calculate the molecular mass of Cl2.
Calculate the molecular masses of the following compounds :
Methane, CH4
(Atomic masses : C = 12 u ; H = 1 u)
What is meant by the ‘molar mass’ of a substance ? State the unit in which molar mass is usually expressed.
Calculate the relative molecular masses of the following
(NH4)2 Cr2O7
[At mass : C = 12, H = 1, O = 16, Ci = 35.5, N = 14, Cu = 63.5, S = 32, K = 39, Pt = 195, Ca = 40, P = 31, Mg = 24]
Calculate the weight/mass of an atom of oxygen.
The gram molecular mass of oxygen molecule is ______.
Calcium carbonate is decomposed on heating in the following reaction
CaCO3 → CaO + CO2
Calculate the gram molecular mass of calcium carbonate involved in this reaction.
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.
NaOH
Calcium carbonate react with dilute hydrochloric acid as given below:
\[\ce{CaCO3 + 2HCl -> CaCl2 + H2O + CO2}\]
What is the mass of 5 moles of calcium carbonate? (Relative molecular mass of calcium carbonate is 100)
