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प्रश्न
Explain the term molecular formula.
उत्तर
The molecular formula of a compound denotes the actual number of atoms of different elements present in one molecule of the compound.
संबंधित प्रश्न
A compound has the following percentage composition by mass: carbon 14.4%, hydrogen 1.2% and chlorine 84.5%. The relative molecular mass of this compound is 168, so what is its molecular formula?
A gaseous compound of nitrogen and hydrogen contains 12.5% hydrogen by mass. Find the molecular formula of the compound if its relative molecular mass is 37.
[N = 14, H = 1].
An organic compound with vapour density = 94 contains C = 12.67%, H = 2.13% and Br = 85.11%. Find the molecule formula.
[Atomic mass: C = 12, H = 1, Br = 80]
Calculate the mass of iron in 10 kg of iron ore which contains 80% of pure ferric oxide.
If the empirical formula of two compounds is CH and their vapour densities are 13 to 39 respectively, find their molecular formula.
A gaseous hydrocarbon contains 82.76% of carbon. Given that its vapour density is 29, find its molecular formula.
Find the molecular formula of a hydrocarbon having vapour density 15, which contains 20% of Hydrogen.
A gas cylinder filled with hydrogen holds 5g of the gas. The same cylinder holds 85 g of gas X under the same temperature and pressure. Calculate the molecular weight of gas X.
A hydrate of calcium sulphate CaSO4.xH2O contains 21% water of crystallization. Find the value of x.
On analysis, a substance was found to contain:
C = 54.54%, H = 9.09%, O = 36.36%
The vapour density of the substance is 44, calculate its molecular formula.
