Chemistry
Senior High
naohの分子量40とする。
naohの0.40%(w/v)水溶液、2.00L中のnaohのモル量を求めなさい。
答0.20mol
何故このようになるのですか?
あ
409
0.4% w/v
=
10000
40g: 100ml = X:2000
10x=8000
.: x = 800 g
8008
408/401
=
20 mol
40g: xg = 100ml: 2000
x =
8009
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