Question

lets u the scale. how many moles of hydrogen are in 2 moles of c₂h₆?

Explanation:

Step1: Identify hydrogen - atom ratio in $C_2H_6$

In one molecule of $C_2H_6$, there are 6 hydrogen atoms.

Step2: Calculate moles of hydrogen in 2 moles of $C_2H_6$

If 1 mole of $C_2H_6$ contains 6 moles of hydrogen atoms, then 2 moles of $C_2H_6$ will contain $2\times6$ moles of hydrogen. So, the number of moles of hydrogen $n = 2\times6=12$ moles.

Answer:

12 moles