Empirical & Molecular Formula
Q. 11.2 litre of a gas at STP weighs 14 g. The gas could not be
Q. 0.242 g sample of K is heated in the presence of oxygen gas. This resulted in the formation of 0.440 g of a crystalline compound. What is the formula of this compound?
1.615 g of anhydrous ZnSO4 was places in moist air. After a few days, its mass was found to be 2.875g. The molecular formula for hydrated zinc sulphate is
Q. The number of moles of carbon dioxide which contain 8 g of oxygen is
- 0.5 mol
- 0.40 mol
- 0.25 mol
- 0.20 mol
The simplest formula of a compound containing 50% of element X (atomic mass 10) and 50% of element Y (atomic mass 20) is
A hydrocarbon contains 86% carbon, 488ml of the hydrocarbon weight 1.68 g at STP. Then the hydrocarbon is an
One litre of a gas at STP weight 1.16 g it can possible be
Two oxides of a metal contain 27.6% and 30.0% of Oxygen, respectively. If the formula of the first be M3O4. Find that of the second.
The ratio of the mass of C-12 atom to that of an atom of element X (whose atomicity is four) is 1 : 9. Themolecular mass of element X is