Question

0.49 g of H2SO4 is given find (a) no.of moles , (b) no. of molecules

Answer 1

m=0.49g

M=98g/mol

a)

$n = \frac{m}{ molar \: mass}$

$n = \frac{0.49}{98} = 0.005mol$

b)

$molecules = 0.05 \times 6.022 \times 10 }^{23 } = 3.011 \times 10 {}^{22}$