Advertisements
Advertisements
Question
Calculate the molecular masses of the following compounds :
Methanol, CH3OH
Advertisements
Solution
Given:
Atomic mass of C = 12 u
Atomic mass of O = 16 u
Atomic mass of H = 1 u
Therefore, molecular mass of CH3OH can be calculated as follows:
(1 ×12) + (4 × 1) + (1 × 16) = 32
Hence, molecular mass of methanol is 32 u.
APPEARS IN
RELATED QUESTIONS
Calculate the molecular mass of CH4.
Calculate the molecular mass of C2H4.
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
Calculate the molecular masses of the following :
- Hydrogen, H2
(Atomic masses : H = 1 u ; O = 16 u ; Cl = 35.5 u ; N = 14 u ; C = 12 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 formula masses of the following compounds :
Sodium oxide, Na2O
How many moles are there in 34.5 g of sodium ? (Atomic mass of Na = 23 u)
Calculate the relative molecular masses of the following
CHCI3
[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 relative molecular mass of ZnCO3.
The modem atomic mass scale is based on ______.
