Question

9.

Which of the following samples contains the greatest number of atoms?
a. 1 mole of CO2
c. 3 moles of N20
b. b. 2 moles of He
d. 4 moles of CO​

Answer 1

N2O.

Step-by-step explanation:

Hello there!

In this case, according to the Avogadro's number, we can compute the number of atoms, taking into account that CO2 has three moles of atoms, N2O has three moles of atoms, He one mole of atoms and CO two moles of atoms:

`atoms_(CO_2)=1molCO_2*(3*6.022x10^(23)atoms)/(1molCO_2)=1.81x10^(24)atoms\\\\atoms_(N_2O)=3molN_2O*(3*6.022x10^(23)atoms)/(1molN_2O)=5.4x10^(24)atoms\\\\atoms_(He)=2molHe*(1*6.022x10^(23)atoms)/(1molHe)=1.2x10^(24)atoms\\\\atoms_(CO)=4molCO*(2*6.022x10^(23)atoms)/(1molCO)=4.82x10^(24)atoms`

Thus, we infer that 3 moles of N2O have the greatest number of atoms.