Write the chemical formula of the following. (a)Magnesium chloride (b) Calcium chloride (c) Copper Nitrate (d) Aluminium chloride (e) Calcium carbonate

What are polyatomic ions ? Give example

When 3.0g of carbon is burnt in 8.00g oxygen, 11.00g of carbon dioxide is produced what mass of carbon dioxide will be formed when 3.00g of carbon is burnt in 50.00g of oxygen ? Which low of chemical combination will govern your answer ?

An 0.24g sample of a compound of oxygen and boron was found by analysis to contain 0.096g of boron and 0.144g of oxygen. Calculate the percentage composition of the compound by weight.

How many atoms are present in a (a) H2S molecule and (b) PO4 3– ion ?

What is meant by the term chemical formula ?