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elizaveta3333
@elizaveta3333
July 2022
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ОПРЕДЕЛИТЬ КОЛИЧЕСТВО ВЕЩЕСТВА H3PO4 МАССОЙ 9,8 Г
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Alexei78
Решение есть на фотографии
1 votes
Thanks 1
irishekova
Verified answer
Дано
m(H3PO4)=9.8 g
----------------------------
n(H3PO4)-?
n(H3PO4) = m(H3PO4) / M(H3PO4) , M(H3PO4)=1*3+31+16*4 = 98 g/mol
n(H3PO4) = 9.8 / 98 = 0.1 mol
ответ 0.1 моль
1 votes
Thanks 2
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Answers & Comments
Verified answer
Даноm(H3PO4)=9.8 g
----------------------------
n(H3PO4)-?
n(H3PO4) = m(H3PO4) / M(H3PO4) , M(H3PO4)=1*3+31+16*4 = 98 g/mol
n(H3PO4) = 9.8 / 98 = 0.1 mol
ответ 0.1 моль