A divalent metal oxide contains 60% of metal. What is atomic weight of metal?
wt of metal= 60 g
wt of oxygen= (100-60) g= 40 g
Eq. wt. of metal = wt. of metal/ wt of oxygen* 8
= 12
As metal is divalent, At. wt= Eq. wt* valency= 12*2 = 24
40 mL of ammonia after decomposition by explosion becomes 80mL. 60mL of oxygen is added and electric spark is again produced the volume becomes 50mL under identical condition. Find formula of ammonia.