Question

solution of NaOH has a concentration of 4 g/dm3. what is the mass of NaOH contained in 250 cm3 of this solution

Answer 1

Answer:

1gram.

Explanation:

4g/dm3 = 4g per litre.

250cm3 means .25 Litres.

Multiplying .25L with 4g/L gives 1 gram.

Answer 2

Answer:

1 gram

Explanation:

GIVEN- solution of NaOH has a concentration of 4 g/dm3.

TO FIND- the mass of NaOH contained in 250 cm3 of this solution

SOLUTION - 4g/dm3.= 4g per litre

250cm^3= 0.25 litre

by multiplying 25L with 4g/l then we get 1gram

FINAL ANSWER - 1 gram

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