Question

calculeaza cantitatea de substanta de zinc cu masa:1. 65g 2. 6,5g 3. 13g

Answer 1

n=m/M
1)$n = \frac{65}{65} = 1 \: moli$
2)$n = \frac{6.5}{65} = 0.1 \: moli$
3)
$n = \frac{13}{65} = 0.2 \: moli$