Question

How many moles of CO 2 are in 870 mL of a 0.75 M solution? Please explain how you get it and what you do because nothing is making sense.

Answer 1

You need to use this equation: M =n/L

M (molarity/concentration)
n=number of moles
L= volume in liters

You're looking for number of moles so algebraically rearrange the equation to get

n= M x L

Make sure you convert the given volume into L before you calculate. (870 mL = .87 L)

Your answer will have 2 significant figures

Answer 2

Thanks so much :)