Question

How many molecules of carbon dioxide (CO2) are there in 0.450 mol of carbon dioxide?(1 point)
Responses

5.42×1023

5 point 4 2 times 10 to the 23th power

2.71×1023

2 point 7 1 times 10 to the 23th power

1.34×1024

1 point 3 4 times 10 to the 24th power

6.02×1023

Answer 1

Number of molecules = moles × Avogadro's number = 0.450 mol × 6.022×10^23 mol^−1 = 2.71×10^23 molecules.

So the correct choice is 2.71×10^23.