Advertisements
Advertisements
Question
Calculate the molecular mass of CH4.
Advertisements
Solution
Molecular mass of CH4 = Atomic mass of C + 4 × Atomic mass of H
= 12 + 4 × 1
= (12 + 4) u
= 16 u
APPEARS IN
RELATED QUESTIONS
Calculate the molecular mass of Cl2.
Calculate the molecular mass of NH3.
Calculate the formula unit mass of ZnO given the atomic mass of:
- Zn = 65 u
- Na = 23 u
- K = 39 u
- C = 12 u
- O = 16 u
What is the significance of the formula H2O ?
Write the name of the following compound and deduce its molecular mass.
Na2SO4
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]
Fill in the blank with the correct word from the options given below:
Relative molecular mass of an element/compound is the number of times one ________ of the substance is heavier than −1/12that the mass of an atom of carbon [C12].
Calculate the relative molecular mass of CaSO4 [Zn = 65, S=32, O = 16, Ca = 40, C = 12]
Calcium carbonate is decomposed on heating in the following reaction
CaCO3 → CaO + CO2
How many moles of CO2 are there in this equation?
A gas occupied 360 cm3 at 87°C and 380 mm Hg pressure. If the mass of gas is 0.546 g, find its relative molecular mass.
