Question

3 Determine a massa de 3 mol de cada uma das substâncias
a) NO2
b) CH4
c ) H2O​

Answer 1

$\Large\boxed{\begin{array}{l}\tt a)~\sf m_{NO_2}=46~g/mol\\\sf 1~mol=46~g\\\sf 3~mols=3\cdot46=138~g\\\tt b)~\sf m_{CH_4}=16~g/mol\\\sf 1~mol=16~g\\\sf 3~mols=3\cdot16=48~g\\\tt c)~\sf m_{H_2O}=18~g/mol\\\sf 1~mol=18~g\\\sf 3~mols=3\cdot18=54~g\end{array}}$

Answer 2

Resposta:

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