How many atoms are found in 3.45 g of CO2?

Question

Chemistry

Naomi Pruitt

6 April, 17:13

How many atoms are found in 3.45 g of CO2?

+5

Answers (2)

Know the Answer?

Cassidy Tucker · Answer 1

Answer: 4.72 x 10^22 atoms

Explanation:

MM of CO2 = 12 + (16 x 2) = 12 + 32 = 44g/mol

44g of CO2 contains 6.02x10^23 atoms

Therefore, 3.45g will contain = (3.35 x 6.02x10^23) / 44 = 4.72 x 10^22 atoms

Angus · Answer 2

Number of moles = Mass / Molar mass

= 3.45 / 44

=0.078 mole

hence, the number of atoms = 0.078 * 6.02*10∧23

=4.695E28 atoms