the number of atoms in 24 g calcium is?

0 ⤊

A. 24.
B. 3.6 x 10 to the 23 power.
C. 6.02 x 10 to the 23 power.
D. 48.

2007-01-18 11:41:28 · 2 answers · asked by Noor 3 in Science & Mathematics ➔ Chemistry

I also choose B). 3.6 x 10 to the 23 power.

2007-01-18 11:54:58 · answer #1 · answered by Island Nimbus 2 · 0⤊ 0⤋

Atomic weight: Ca = 40

24gCa x 1molCa/40gCa x 6.02 x 10^23atomsCa/1molCa = (24)(6.02x10^23)(40) = 3.16 x 10^23

So B.

2007-01-18 19:49:25 · answer #2 · answered by steve_geo1 7 · 0⤊ 0⤋