Advertisements
Advertisements
प्रश्न
Calculate the molecular mass of CH3OH.
उत्तर
Molecular mass of CH3OH = Atomic mass of C + 3 × Atomic mass of H + Atomic mass of O
= (12 + 3 × 1 + 16 + 1) u
= (12 + 3 + 17) u
= 32 u
APPEARS IN
संबंधित प्रश्न
Calculate the molecular mass of Cl2.
Calculate the molecular mass of C2H4.
Calculate the molecular mass of nitric acid, HNO3. (Atomic masses : H = 1 u ; N = 14 u ; O = 16 u)
Calculate the molecular mass of hydrogen bromide (HBr). (Atomic masses : H = 1 u ; Br = 80 u)
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)₂SO₄
[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 mass of oxygen in 2.2 litres of CO2 at STP.
Calculate the weight/mass of the molecule of oxygen.
Calcium carbonate is decomposed on heating in the following reaction
CaCO3 → CaO + CO2
How many moles of CO2 are there in this equation?
The modem atomic mass scale is based on ______.