Question

If a sample of pure sodium has a mass of 8.2 grams and sodium has an average atomic mass of 22.99 g/mol, how many sodium atoms are there in the sample?

3.21 x 1021 atoms

2.15 x 1023 atoms

1.69 x 1024 atoms

1.13 x 1026 atoms

Answer 1

@sarah786

Answer 2

@hba

Answer 3

Its easiy

Answer 4

Number of Sodium atoms = Mass of Na / M.Mass of Na x Avogrado's no

Answer 5

help u ???

Answer 6

i don't have a calculator.... @sarah786 :/

Answer 7

Np ..I solved it for u .wait :)

Answer 8

its B

Answer 9

THANK YOU @sarah786 i wish i could just give you like 5 medals right now haha

Answer 10

haha I wish too .. lol :D