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劑量化學 1題問題 謝謝大師的指教

a mixture of NaCl and NaNO3 is 31.7% sodium by mass . What is the approximate percent of NaCl in thus mixture?(a) 30% (b)32% (c)34% (d)38% (e)36%
Suppose that the fraction of NaCl is x

then NaNO3 would be 1-x.By the way

NaCl=23 35.5=58.5 and NaNO3=85We get the ratio of Na is... [x*(23/58.5) (1-x)*23/85]/x (1-x)=0.317===

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    nacl分子量 nacl的作用 3 nacl nacl性質 nacl 溶解度 nacl是什麼 nacl密度 nacl沸點 nacl結構 nacl沉澱聚合物NaCl NaNO3 mixture sodium ratio
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