Дано:
m(NaOH) 8g
m(Na3PO4)-?
8
NaOH+H3PO4-->Na3PO4+3H20
Х
3*40
164
M(NaOH) 40 g/mol
М(Na3PO4) = 164 g/mol
m(Na3PО4) =8"164 / 120%3 11g
ответ 11 г
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Дано:
m(NaOH) 8g
m(Na3PO4)-?
8
NaOH+H3PO4-->Na3PO4+3H20
Х
3*40
164
M(NaOH) 40 g/mol
М(Na3PO4) = 164 g/mol
m(Na3PО4) =8"164 / 120%3 11g
ответ 11 г