Question

Question #9629b

Answer 1

See the answer below...

Explanation:

`0.2(M)` NaOH means `1000mL` of solution contains `0.2mol` NaOH
Hence to produce `250mL` of solution it needs `0.2/4=0.05mol`
Hence you have `0.05mol` or `40xx0.05=2g`