Question #f4fbd

1 Answer
Dec 4, 2017

See below.

Explanation:

Since this question only gives you the mass of the atom in question, you don't know what the substance is and thus can't find a molar mass to convert the grams to moles.

So, since we have the mass of an individual atom we can simply convert "0.27 g" to kg and divide by the atom's mass.

Step 1: Convert from g to kg

"0.27 g"*(("1 kilogram")/("1,000 grams"))="0.00027 kg"

Step 2: Divide the total mass by the mass of one atom.

0.00027/(1.5*10^(-26))=1.8*10^22 "atoms"

Hope this helps!