How many moles of \( \mathrm{Na}^{+} \)ions are in \( 20 \mathrm{~m...
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0How many moles of \( \mathrm{Na}^{+} \)ions are in \( 20 \mathrm{~mL} \) of \( 0.40 \mathrm{M} \mathrm{Na}_{3} \mathrm{PO}_{4} \) :
(A) \( 0.0080 \)
(B) \( 0.024 \)
(C) \( 0.050 \)
(D) \( 0.20 \)
\( \mathrm{P} \)
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