Question

Find the gram molecular mass of the following from the data given:
i) H2O ii) CO2 iii) NaOH iv) NO2 v) H2SO4

Answer 1

1) H2O: 2(1)+16 =18 2)CO2: 12+2(16) =44 3)NaOH: 23+16+1 =40 4)NO2: 14+2(16) =44 5)H2SO4: 2(1)+32+64 =98

Answer 2

Hello!

(i) $\sf H_{2}O$ :
$1 \times 2 + 16\times1 \implies 2 + 16 \implies 18\: \sf u$

(ii) $\sf CO_{2}$ :
$12\times1 + 16\times2 \implies 12 + 32 \implies 44\: \sf u$

(iii) $\sf NaOH$ :
$23\times1 + 16\times1 + 1\times1 \implies 23 + 16 + 1 \implies 40\: \sf u$

(iv) $\sf NO_{2}$ :
$14\times1 + 16\times2 \implies 14 + 32 \implies 46\: \sf u$

(v) $\sf H_{2}SO_{4}$ :
$1\times2 + 32\times1 + 16\times4 \implies 2 + 32 + 64 \implies 98 \: \sf u$

Cheers!