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caoduynhat97
2 năm trước
a) Tính khối lượng của: 1mol S; 0,25mol Mg; 0,1mol N2; 1,75 mol NaCl b) 2mol Fe; 2,5 mol CaCO3; 0,75mol CuSO4 Bài tập 3: a) Tính số mol của: 62gam P; 11,5gam Na; 42gam Fe; 38,34gam H2O. b) 100gam CuO; 95,48gam CO2.
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