Cho 70,5gam hỗn hợp CuO và Na2O tác dụng vừa đủ với 13,5g nước.
a) TÍnh phần trăm khối lượng mỗi oxit trong hỗn hợp
b)Tính m dung dịch H2SO4 19,6% hoà tam hết oxit ban đầu
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Ответ:
c. hydrogen-ion concentration
Explanation:
pH is a logarithmic measure of the hydrogen ion concentration of an aqueous solution pH = -log[H + ] where log is the base 10 logarithm and [H + ] is the hydrogen ion concentration in moles per liter