Question

Q3. Write down the formulae of
(i) sodium oxide
(ii) aluminium chloride
(iii) sodium suphide
(iv) magnesium hydroxide
04. What is the mass of -
(a) 1 mole of nitrogen atoms?
(b) 4 moles of aluminium atoms (Atomic mass of aluminium= 27)?
(c) 10 moles of sodium sulphite(Na2503)
Q.5.Draw a Well labelled diagram of HIV(Human immunodeficiency virus)
Q.6.Write any four difference between acute disease and chronic disease.​

Answer 1

Answer:

q3. (1) Na2O

2-AlCl3

Na2So4

Mg(OH)