Refer to a periodic table and tell how many helium atoms (He) would be needed to
get close to the same mass as an average oxygen atom (O).
a. six
b. four
C. twelve
d. one-fourth
about 4. the weight of He is about 4 amus and the weight of O is about 16 amus, so you would need 4 He atoms to get close to the same mass as an O atom. i hope this helps
