Вопрос школьника по предмету Химия
Обчисліть масу продукту взаємодії амінооцтової кислоти масою 10 г з калій гідроксидом масою 6 г
срочно пж
Ответ учителя по предмету Химия
дано
m(ppa CH3COOH) = 60 g
W(CH3COOH) = 10%
——————————
m(KOH)-?
m(CH3COOH) = 60 * 10% / 100% = 6 g
CH3COOH+KOH—>CH3COOK+H2O
M(CH3COOH) = 60 g/mol
n(CH3COOH) = m/M = 6 / 60 = 0.1 mol
n(CH3COOH) = n(KOH) = 0.1 mol
M(KOH) = 56 g/mol
m(KOH) = n*M = 0.1 * 56 = 5.6 g
ответ 5.6 г
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1.рыночная экономика способствует разрешению любых экономических проблем.
2. в условиях рыночной экономики не учитывает интересы потребителей
верно только 1
верно 2
оба верны
оба неверны