Question

How many moles are in
6.02x1023 atoms of CO2?
21.3 moles
77.2 moles
45 moles
91.2 moles
55 moles
1.0 moles
1050 moles
.012 moles

Multiple choice

Answer 1

Answer:

1.0 moles

Explanation:

we are given the number of atoms of the ionic compound, carbon dioxide ($\rm CO_2$) which is 6.02x10²³ and we want to find the number of moles in $\rm CO_2$.

recall that, there are approximately 6.02x10²³ atoms in a mole of any substance (which is actually Avogardro's number, $\rm N_a=6.02214x10^{23} \: mol^{-1}$ )The answer therefore can be found by dividing given the number of atoms of $\rm CO_2$ by the Avogadro's number.so, dividing the given number of atoms of $\rm CO_2$ by the Avogadro's number yields approximately 1.0

Hence,There are approximately 1.0 moles in 6.02x10²³ atoms of $\rm CO_2.$