The ratio between the number of molecules in 2g of hydrogen and 32g of oxygen is : [Given that H=1,O=16]
if number of molecules of H2 are double than that of O2, then ratio of kinetic energy of hydrogen and that of oxygen at 300 K is
In hydrogen peroxide (H2O2), the proportion of hydrogen by mass is :
Given below are some compounds and the number of atoms of their constituent elements in each of their molecules. Write their molecular formulas.
Compound
Number of atoms of constituent elements
Formula
(a)
Potassium hydroxide
K:1, O:1, H:1
KOH
(b)
Hydrogen peroxide
H:2, O:2
(c)
Iron chloride
Fe:1, Cl:2
(d)
Ammonium chloride
N:1, H:4, Cl:1
(e)
Copper sulphate
Cu:1, S:1, O:4
(f)
Magnesium oxide
Mg:1, O:1