+92 Now we need to go backwards from atoms to grams. First, let's convert it into moles.
8.5*10^9 atoms Ne / 6.022*10^23 mol^-1 = 1.4114912*10^-14 mol Ne
Next, we multiply it by neon's molar mass, 20.180.
1.4114912*10^-14 mol Ne * 20.180 g/mol = 2.84838924*10^-13 g Ne
Now, all that's left is the significant figures. There were two at the start, so there need to be two in the answer.
2.8*10^-13 g Ne
+92 Now we need to go backwards from atoms to grams. First, let's convert it into moles.
8.5*10^9 atoms Ne / 6.022*10^23 mol^-1 = 1.4114912*10^-14 mol Ne
Next, we multiply it by neon's molar mass, 20.180.
1.4114912*10^-14 mol Ne * 20.180 g/mol = 2.84838924*10^-13 g Ne
Now, all that's left is the significant figures. There were two at the start, so there need to be two in the answer.
2.8*10^-13 g Ne
