Question

pls answer this question its urgent​

Answer 1

Answer:

a=molecular mass : 20+32+64=116

b=molecular mass: 14+ 32=44

Answer 2

1) 136g

2) 60g

Explanation:

1) relative molecular mass of calcium sulphate (CaSO4) = mass of Ca + mass of S + 4(mass of O)

= 40 + 32 + 4(16)

= 136g

2) relative molecular mass of nitrogen dioxide (NO2)

= mass of N + 2(mass of O)

= 28 + 2(16)

= 60g