Question

calculati masa de accid sulfuric carese gaseste 350ml de solutie de concentratie 20%ci densitatea 1,143 g pe ml

Answer 1

$P= \frac{m}{V} =\ \textgreater \ m=P*V=400.05(aproximativ)=400g=md\\C= \frac{md}{ms} *100=\ \textgreater \ md= \frac{c*ms}{100} = \frac{20*400}{100}=80g$