Question

Question #e0b23

Answer 1

That many molecules will have a mass of 88.02 g.

`N` is just a notation used for Avogadro's number, which represents the number of molecules present in 1 mole of a substance. In your case,

`N = 6.022 * 10^(23)"molecules"` `CO_2`

Since you have to calculate the mass of 2N molecules, which is equivalent to having 2 moles of `CO_2`, you'll get

`2cancel("moles"CO_2) * "44.01 g"/(1cancel("mole"CO_2)) = "88.02 g"`

which is equivalent to

`2cancel("N molecules"CO_2) * "44.01 g"/(cancel(N" molecules"CO_2)) = "88.02 g"`