Advertisements
Advertisements
प्रश्न
Calcium carbonate is decomposed on heating in the following reaction
CaCO3 → CaO + CO2
How many moles of Calcium carbonate is involved in this reaction?
उत्तर
One mole
APPEARS IN
संबंधित प्रश्न
Calculate the molecular mass of H2.
Calculate the molecular mass of CH4.
Define gram molecular mass of a substance. How much is the gram molecular mass of oxygen ?
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 molecular mass of the following:
CH3COONa
[At mass : C = 12, H = 1, O = 16, Cl = 35.5, N = 14, Cu = 63.5, S = 32, Na = 23, K = 39, Pt = 195, Ca = 40, P = 31, Mg = 24]
Calculate:
The gram molecular mass of chlorine if 308cm3 of it at STP weighs 0.979 g.
The mass of one steel screw is 4.11g. Find the mass of one mole of these steel screws. Compare this value with the mass of the Earth (5.98 × 1024kg). Which one of the two is heavier and by how many times?
What are ionic and molecular compounds? Give examples.
Write the name of the following compound and deduce its molecular mass.
MgCl2
Calcium carbonate react with dilute hydrochloric acid as given below:
\[\ce{CaCO3 + 2HCl -> CaCl2 + H2O + CO2}\]
What is the volume of carbon dioxide liberated at S.T.P. at the same time?
