Ammonia contains `82.35%` of nitrogen and `17.65%` of hydrogen. Water contains `88.90%` of oxygen `63.15%` of oxygen and `36.85%` of nitrogen. Show by calculations from these data which law of chemicmal combination is verified.

Ammonia contains 82.35% of nitrogen and 17.65% of hydrogen. Water contains 88.90% of oxygen . Nitrogen trioxide contains 63.15% of oxygen and 36.85% of nitrogen. Show by calculations from these data which law of chemicmal combination is verified.

Ammonia contains 17.65% of hydrogen, water contains 11.11% of hydrogen and nitrous oxide contains 36.36% of oxygen. Show that these data illustrate the law of reciprocal proportions.

The atmosphere contains about - --% of oxygen

Water contains 14 (2)/(7) % of hydrogen and the rest is oxygen. In 350 g of water, oxygen will be

An oxide of nitrogen contains 36.8% by weight of nitrogen. The formula of the compound is

A compound contains 69.5% oxygen and 30.5% nitrogen and its molecular weight is 92.The compound will be