дано
m1(ppa HNO3) = 140 g
W1(HNO3) = 30 %
m2(ppa HNO3) = 150 g
W2(HNO3) = 35%
W3(HNO3)-?
m( общ ppaHNO3) = m1(ppaHNO3)+m2(ppa HNO3) = 140 + 150 = 290 g
m1(HNO3) = 140 * 30% / 100% = 42 g
m2(HNO3) = 150 * 35% / 100% = 52.5 g
m(общ HNO3)= m1(HNO3)+m2(HNO3) 42+52.5 = 94.5 g
W3(HNO3) = m(общ HNO3) / m(общ рраHNO3) + 100% = 94.5 / 290 * 100% = 32.6%
ответ 32.6%
Объяснение:
дано
m1(ppa HNO3) = 140 g
W1(HNO3) = 30 %
m2(ppa HNO3) = 150 g
W2(HNO3) = 35%
W3(HNO3)-?
m( общ ppaHNO3) = m1(ppaHNO3)+m2(ppa HNO3) = 140 + 150 = 290 g
m1(HNO3) = 140 * 30% / 100% = 42 g
m2(HNO3) = 150 * 35% / 100% = 52.5 g
m(общ HNO3)= m1(HNO3)+m2(HNO3) 42+52.5 = 94.5 g
W3(HNO3) = m(общ HNO3) / m(общ рраHNO3) + 100% = 94.5 / 290 * 100% = 32.6%
ответ 32.6%
Объяснение: