17.
Calculate the number of moles in the following:
1. 28g He
ii. 46g of Na.
iii. 60 g of Ca.
Answers
Answered by
5
Explanation:
A. Atomic mass of He=4g
Number of moles =
atomic mass
mass
n=
4
28
=7 moles
B. Atomic mass of Na=23g
Number of moles =
atomic mass
mass
n=
23
46
=2 moles
C.Atomic mass of Ca=40g
Number of moles =
atomic mass
mass
n=
40
60
=1.5 moles
D.Atomic mass of Al=27g
Number of moles =
atomic mass
mass
n=
27
27
=1 mole
Answered by
3
Answer:
hope it helps you please follow me
Attachments:
Similar questions