Đáp án:
\(\begin{array}{l}
49)\\
{m_{Mg}} = 7,29606g\\
50)\\
{V_{Cl}} = 2,24l
\end{array}\)
Giải thích các bước giải:
\(\begin{array}{l}
49)\\
\overline {{M_{Mg}}} = \dfrac{{78,99 \times 24 + 10 \times 25 + 11,01 \times 26}}{{100}} = 24,3202(g/mol)\\
{m_{Mg}} = 0,3 \times 24,3202 = 7,29606g\\
50)\\
\overline {{M_{Cl}}} = \dfrac{{35 \times 75,53 + 37 \times 24,47}}{{100}} = 35,4894(g/mol)\\
{n_{Cl}} = \dfrac{{3,55}}{{35,4894}} = 0,1\,mol\\
{V_{Cl}} = 0,1 \times 22,4 = 2,24l
\end{array}\)
