215 -- If $45\text{ mL}$ of $30\text{ g.L}^{-1}$ magnesium sulfate solution is mixed with $50\text{ mL}$ of $\dfrac{2}{7}\text{ mol.L}^{-1}$ sodium phosphate solution, what is the limiting reagent and how many moles of precipitate are formed? $$(O = 16,\ Mg = 24\ ,\ S = 32 : \text{g.mol}^{-1})$$ (1) magnesium sulfate $-\ 7.5\times10^{-3}$ (2) sodium phosphate $-\ 5\times10^{-3}$ (3) magnesium sulfate $-\ 3.75\times10^{-3}$ (4) sodium phosphate $-\ 2.5\times10^{-3}$
\textbf{215 --} If $45\text{ mL}$ of $30\text{ g.L}^{-1}$ magnesium sulfate solution is mixed with $50\text{ mL}$ of $\dfrac{2}{7}\text{ mol.L}^{-1}$ sodium phosphate solution, what is the limiting reagent and how many moles of precipitate are formed?
$$(O = 16,\ Mg = 24\ ,\ S = 32 : \text{g.mol}^{-1})$$
(1) magnesium sulfate $-\ 7.5\times10^{-3}$ \hfill (2) sodium phosphate $-\ 5\times10^{-3}$
(3) magnesium sulfate $-\ 3.75\times10^{-3}$ \hfill (4) sodium phosphate $-\ 2.5\times10^{-3}$
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