Answered

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

ardni313

Mass of CO₂ = 132 g

Further explanation  

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 :

[tex]\tt n=\dfrac{mass}{MW}[/tex]

moles of CO₂ = 3

mass of CO₂(MW=44.01 g/mol) :

[tex]\tt mass=mol\times MW\\\\mass=3\times 44.01\\\\mass=132.03~g\approx 132~g[/tex]

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