a) `n_{C}=m/M=(30)/(12)=2,5 (mol)`
b) `n_{Mg}=m/M=(30)/(24)=1,25 (mol)`
c) `n_{O}=m/M=(80)/(16)=5 (mol)`
d) `n_{Cu}=m/M=(80)/(64)=1,25 (mol)`
@ThuyKieuCuTo
Đáp án + Giải thích các bước giải:
`a)n_C = m/M = 30/12 = 2,5 (mol)`
`b)n_(Mg) = m/M = 30/24 =1,25(mol)`
`c)n_O = m/M = 80/16 = 5 (mol)`
`d)n_(Cu) = m/M = 80/64 = 1,25 (mol)`
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