Question

Suppose you had 2.0158 grams of (H2) how many moles of hydrogen do u have ?

Answer 1

$\hbox { You have to calculate the Molecular Mass for H2:}$

$M_{H2} = 2A _{H2} = 2*1=2 \hbox { grames/mole}$

$\hbox { So, in 2,0158 grames of H you will have 1 mole...}$