a, Ta có: CM=\(\frac{n}{V}\)= \(\frac{0.1}{0.2}\)=0.5M
b, C%=\(\frac{mct}{mdd}\).100%=\(\frac{15}{60}\).1005=25%
a) CM CuSO4= 0.1/0.2=0.5M
b) C% NaCl= 15/ (60+15) * 100%= 20%
Mình sửa lại nhé:
a) CM CuSO4= 0.1/0.2= 0.5M
b) C% NaCl= 15/60 *100%= 25%