Advertisements
Advertisements
प्रश्न
Define 'molecular mass' of a substance.
Advertisements
उत्तर
The molecular mass of a substance is the relative mass of its one molecule as compared with a `""^12""_6C` atom. The mass of an atom of is `""^12""_6C` considered to be 12 a.m.u.
APPEARS IN
संबंधित प्रश्न
Calculate the molecular mass of C2H6.
What is meant by the ‘molar mass’ of a substance ? State the unit in which molar mass is usually expressed.
A gas cylinder of capacity of 20 dm3 is filled with gas X the mass of which is 10 g. When the same cylinder is filled with hydrogen gas at the same temperature and pressure the mass of the hydrogen is 2 g, hence the relative molecular mass of the gas is ______.
Calculate:
The mass of oxygen in 2.2 litres of CO2 at STP.
From the equation
\[\ce{3Cu + 8HNO3 -> 3Cu(NO3)2 + 4H2O + 2NO}\]
(Atomic mass Cu = 64, H = 1, N = 14,O = 16)
Calculate the mass of copper needed to react with 63g of HNO3.
Calculate the relative molecular mass of CaSO4.
[S = 32, O = 16, Ca = 40]
Answer the following question using the data given below:
- Assertion: The Relative Molecular Mass of Chlorine is 35.5 a.m.u.
- Reason: The natural abundance of Chlorine isotopes are not equal.
What is the SI prefix for each of the following multiples and submultiples of a unit?
- 103
- 10–1
- 10–2
- 10–6
- 10–9
- 10–12
What are ionic and molecular compounds? Give examples.
Write the name of the following compound and deduce its molecular mass.
K2CO3
