Question

How many grams of C are in
1.7 x 10^24 atoms of C?

Answer 1

1 mol = 6.022 × 10^23 atoms

1.7 x 10^24 x 1/(6.022 × 10^23) = 2.823 mol

Carbon has an atomic weight of 12.011 (grams per mol)

2.823 x 12.011 = 33.907053 g

Hope I'm right!