Question

1. rank three samples in order of increasing (a) number of particles, (b) increasing mass in grams, and (c) increasing mole amounts

sample 1: 1.0 mole of carbon
sample 2: 18 grams of carbon monoxide

Explanation:

Step1: Calculate molar mass of CO

M(CO)=12.01 + 16.00=28.01 g/mol

Step2: Calculate moles of CO

n(CO)=$\frac{18}{28.01}\approx0.64$ mol

Step3: Compare number of particles

Since number of particles is proportional to moles, for (a) Sample 2 < Sample 1

Step4: Compare masses

Mass of Sample 1 is 12.01 g, mass of Sample 2 is 18 g, for (b) Sample 1 < Sample 2

Step5: Compare mole amounts

0.64 mol < 1.0 mol, for (c) Sample 2 < Sample 1

Answer:

(a) Sample 2, Sample 1
(b) Sample 1, Sample 2
(c) Sample 2, Sample 1