Advertisements
Advertisements
प्रश्न
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.
उत्तर
Mol. Mass of 8HNO3 = 8 × 63 = 504 g
For 504 g HNO3, Cu required is = 192 g
So, for 63g HNO3Cu required = `(192 xx 63)/504`
= 24g
APPEARS IN
संबंधित प्रश्न
Calculate the molecular mass of hydrogen bromide (HBr). (Atomic masses : H = 1 u ; Br = 80 u)
Calculate the molecular masses of the following :
Carbon dioxide, CO2
(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 :
Ethane, C2H6
(Atomic masses : C = 12 u ; H = 1 u)
Define gram molecular mass of a substance. How much is the gram molecular mass of oxygen ?
From the equation:
\[\ce{C + 2H2SO4 -> CO2 + 2H2O + 2SO2}\]
Calculate the mass of carbon oxidized by 49 g of sulphuric acid (C = 12, relative molecular mass of sulphuric acid = 98)
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 ______.
Choose the correct answer from the options given below.
In water, the hydrogen-to-oxygen mass ratio is
Calculate the weight/mass of: `10^22` atoms of carbon
What are ionic and molecular compounds? Give examples.
Write the name of the following compound and deduce its molecular mass.
K2CO3
