How many grarns would 3 moles of carbon dioxide (CO2) weigh? (round to the nearest whole number)
Your answer

Mass of CO₂ = 132 g

A mole is a number of particles(atoms, molecules, ions)  in a substance

This refers to the atomic total of the 12 gr C-12  which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

mole also can be formulated :

moles of CO₂ = 3

mass of CO₂(MW=44.01 g/mol) :

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

explanation:

0.07 g/cm³

1.37 g/cm³