Which one of the following samples has the greatest mass?

A

4.6 mol of iodine vapor, I2

B

4.1 mol of ammonia, NH3

C

0.39 mol of camphor, C10H16O

D

1.8 mol of formaldehyde, CH2O

E

9.2 mol of krypton, Kr

Verified Answer :

Go to your periodic table and look up the elements and add up for the compounds.

I = 127, Kr = 84, NH₃ = 17, C₁₀H₁₆O = 152, CH₂O = 30

A)
I₂ = 2 I = 2127 g/mol = 254 g/mol,  4.6 mol = 4.6 254 = 1168.4 g

B) 4.1 mol of NH₃ = 4.1
17 = 69.7

C) 0.39 mol of C₁₀H₁₆O = 0.39 152 = 59.28g

D) 1.8 mol of CH₂O  = 1.8
30 = 54g

E) 9.2 mol of Kr = 9.2 * 84 = 772.8g

The largest as you can see is A.

A.  4.6 mol of iodine vapor, I₂