What is the mass in grams of #12 * 10^23# molecules of #CO_2#?

1 Answer
Ernest Z.
Mar 4, 2016

The mass of #"CO"_2# is 88 g.

Explanation:

Step 1. Calculate the number of moles of #"CO"_2#.

#12 × 10^23 color(red)(cancel(color(black)("molecules CO"_2))) × "1 mol CO"_2/(6.022 × 10^23 color(red)(cancel(color(black)("molecules CO"_2)))) = "1.99 mol CO"_2#

Step 2. Calculate the mass of #"CO"_2#

#1.99 color(red)(cancel(color(black)("mol CO"_2))) × "44.01 g CO"_2/(1 color(red)(cancel(color(black)("mol CO"_2)))) = "88 g CO"_2#

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