Ani melarutkan 20g gula pasir kedalam segelas air. setelah diukur volume larutan sebesar 250 ML. konsentrasi larutan gula sebesar ? .........g/l
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VP:250/1000=25/100
ditanya:konsentrasi larutan dalam gr/l
jawab:
kl:mt/vp=20gr/25 per 100
=20×100/25=2000÷25=80gr/l