From 200 mg of CO2 , 10^21 molecules are removed.How many moles of CO2 are left?
Answers
Answer:
Molar mass of CO
2
= 44g
Given mass = 200 mg = 0.2g
Number of moles =
44
0.2
=
220
1
Number of moles=
Avogadro’s number
number of molecules
⇒Number of molecules=Avogadro’s number×number of moles
⇒No. of molecules=6.022×10
23
×
220
1
=2.73×10
21
Molecules in
220
1
moles
As 10
21
molecules are removed,
∴ No. of molecules left = 2.73×10
21
−10
21
=1.73×10
21
∴ No. of moles=
Avogadro’s number
No. of molecules
=
6.23×10
23
1.73×10
21
=2.88×10
−3
hope it's helpful.
Explanation:
Answer:-
Molar mass of CO
2
= 44g
Given mass = 200 mg = 0.2g
Number of moles =
44
0.2
=
220
1
Number of moles=
Avogadro’s number
number of molecules
⇒Number of molecules=Avogadro’s number×number of moles
⇒No. of molecules=6.022×10
23
×
220
1
=2.73×10
21
Molecules in
220
1
moles
As 10
21
molecules are removed,
∴ No. of molecules left = 2.73×10
21
−10
21
=1.73×10
21
∴ No. of moles=
Avogadro’s number
No. of molecules
=
6.23×10
23
1.73×10
21
=2.88x10^-3