Question

( 254 mathrm{gm} mathrm{Na}_{2} mathrm{SO}_{4} rightarrow 6.02 times 10^{23} times 110_{2}^{2} mathrm{tem} )
( frac{254 times 6.02 times 10^{22}}{11 times 6.02 times 10^{23}}+6.22 times 10^{22} 0 mathrm{atoms} )
( 2.3 mathrm{gm}= )

# 0.5 What mass of Na, S0, 7H,O contains exactly 6.023 x 1022 atoms of oxygen?

Solution