Question

Q1). Write the name of compound represent by the following chemical formula 1) kno3 2) al2(so4)3 3) agcl 4) ca3 ( po4)2. Q2. Write the chemical formula of the following compound 1) calcium carbonate 2) sodium sulphate 3) copper nitrate 4) ammonium hydroxide. Q4. What do you understand bye amu. Q5calculate the molequeler mass of the following compound 1) ammonium chloride ( nh4cl) 2) calcium carbonate (caco3). 3) eithi carbonate ( c2h5 oh). Q6. Define the term mole Q7. What is the mass of 1) three moles of carbon dioxide 2)ten mole of hydrogen gas 3) 2.5 mole of calcium

Answer 1

1-potassium nitride

2-alluminium sulphide

3-silver chloride

4-calcium phosphate

Answer 2

1. 1. (1) Potassium Nitride (2) aluminium sulphide (3) silver chloride (4) calcium phosphate. 2
2. . (1) CaCo3 (2) Na2So4 (3)Cu(NO3)2 (4) Al(OH)3