\(a.M_A=32\cdot2=64\left(\dfrac{g}{mol}\right)\)
\(b.\)
\(n_A=\dfrac{5.6}{22.4}=0.25\left(mol\right)\)
\(m_A=0.25\cdot64=16\left(g\right)\)
a, Ta có: \(M_A=32.2=64\left(g/mol\right)\)
b, Có: \(n_A=\dfrac{5,6}{22,4}=0,25\left(mol\right)\)
\(\Rightarrow m_A=0,25.64=16\left(g\right)\)
Bạn tham khảo nhé!