PDF chapter test TRY NOW

Answer the following question:
  
Calculate the molecular masses of \(H_2\), \(O_2\), \(Cl_2\), \(CO_2\), \(CH_4\), \(C_2H_6\), \(C_2H_4\), \(NH_3\), \(CH_3OH\)
 
The molecular masses are:
 
\(H_2\) \(\Rightarrow\) 1 x 2 \(\to\) 2u.
\(O_2\) \(\Rightarrow\) 16 x 2 \(\to\) .
\(Cl_2\) \(\Rightarrow\) 35.5 x 2 \(\to\) .
\(CO_2\) \(\Rightarrow\) 1 x 12 + 2 x 16 \(\to\) .
\(CH_4\) \(\Rightarrow\) 1 x 12 + 4 x 1 \(\to\) .
\(C_2H_6\) \(\Rightarrow\) 2 x 12 + 6 x 1 \(\to\) .
\(C_2H_4\) \(\Rightarrow\) 2 x 12 + 4 x 1 \(\to\) .
\(NH_3\) \(\Rightarrow\) 1 x 14 + 3 x 1 \(\to\) .
\(CH_3OH\) \(\Rightarrow\) 12 + 3 x 1 + 16 + 1 \(\to\) .