дано
m1(ppa KOH) = 120 g
W1(KOH) = 0.2 = 20%
m2(ppaKOH) = 80 g
W2(KOH) = 10%
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Wобщ(KOH)-?
m1(KOH) = 120*20% / 100% = 24 g
m2(KOH) = 80*10% / 100% =8 g
m общ(ppaKOH) = m1(ppa KOH) + m2(ppaKOH) = 120+80=200 g
m общ(KOH) = m1(KOH) + m2(KOH) = 24+8 = 32 g
W(KOH) = m общ(KOH) / m общ(ppaKOH) * 100% = 32/200 * 100% = 16%
ответ 16%
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дано
m1(ppa KOH) = 120 g
W1(KOH) = 0.2 = 20%
m2(ppaKOH) = 80 g
W2(KOH) = 10%
------------------
Wобщ(KOH)-?
m1(KOH) = 120*20% / 100% = 24 g
m2(KOH) = 80*10% / 100% =8 g
m общ(ppaKOH) = m1(ppa KOH) + m2(ppaKOH) = 120+80=200 g
m общ(KOH) = m1(KOH) + m2(KOH) = 24+8 = 32 g
W(KOH) = m общ(KOH) / m общ(ppaKOH) * 100% = 32/200 * 100% = 16%
ответ 16%