Question

A sample containing 0.75 moles of CO2 would contain how many molecules?

Answer 1

4.5 ×10^22)

Step-by-step explanation:

no. of particles =no. of mole×avogadro's number of particles no. of particles =0.75×6.02×10^23 no. of particles =4.5 ×10^22

Answer 2

33g

explanation

n=mM

Where:

- n is the amount or number of moles

- m is the mass in grams

- M is the molar mass in grams/mole

n=0.75

Calculate molar mass by adding the atomic masses of all atoms in the molecule

M=12+16⋅2

=44

m=n⋅M

=0.75⋅44

=33g