Question

If you were asked to convert 3.5 moles of aluminum to grams, which of the following should you use for the conversion?
Select one:
a. fraction: 6.022 times 10 superscript 23 atoms Al over one mol Al atoms
b. fraction: 26.981 g Al over one mol Al
c. fraction: 13.0 g Al over one mol Al
d. fraction: 6.022 times 10 superscript 23 atoms Al over 26.981 mol Al atoms

Answer 1

B.
\[3.5 mols Al \left( \frac{ 26.982g Al }{ 1 mol Al } \right)= 94.437g Al\]

Answer 2

are you sure about this

Answer 3

Yeah.

Answer 4

100%

Answer 5

B. says 26.981not 26.982 in your answer

Answer 6

A. would be used if you were given the number of atoms.
C. is using the wrong molar mass for Al.
D. Wouldn't result in grams.

Answer 7

You can get different answers based on different periodic tables. I used a periodic table that has a slight different molar mass. Your question used 26.981, but my table has 26.982 as the molar mass.

Answer 8

so its still the same answer

Answer 9

Yeah, it's still the same answer.