dat374388 dat374388

22-12-2022
Chemistry

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cho 10g hỗn hợp hai kim loại: Al và Cu tác dụng với dung dịch H2SO4 20% thu được 6,72 lít khí H2(ở đktc)
a,viết PTHH
b,tính khối lượng các chất có trong hỗn hợp
c,tính thành phần trăm khối lượng mỗi kim loại trong hỗn hợp
d,tính khối lượng H2SO4 cần dùng

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