Sea water

Seawater contains about 4.3% salt. How many dm3 of distilled water must we pour into 5 dm3 of seawater to get water with 1.8% salt?

Correct answer:

V =  6.94 dm3

Step-by-step explanation:

4.3% 5=1.8% (5+V) 4.3/100 5=1.8/100 (5+V)  4.3 5=1.8 (5+V)  1.8V=12.5  V=1.812.5=6.94444444  V=181256.944444=18125 dm3=6.94 dm3



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