HOW MANY MOLECULES OF ASPIRIN (molar mass=180 amu)ARE PRESENT IN 50MG TABLET?
Answers
Answered by
7
Answer:
Molar mass of aspirin (C9H8O4)= 180 u
Mass of aspirin= 50 mg= 0.05g
Number of moles,n= Mass/Molar mass
Number of molecules= n x 6.023 x 1023
n=0.05180=0.00027n=0.05180=0.00027
Number of molecules= 0.00027 x 6.023 x 1023
=0.0016262 x 10^23 or 1.6262 x 10^26 molecules
Answered by
1
Answer:
Explanation:
And so, for
C
9
H
8
O
4
we gots a molecular mass of
180.16
⋅
g
⋅
m
o
l
−
1
...
And so
moles of aspirin
=
0.250
⋅
g
180.16
⋅
g
⋅
m
o
l
−
1
=
0.001388
⋅
m
o
l
And to get the number of molecules we simply multiply this molar quantity by the
Avocado number
....
0.001388
⋅
m
o
l
×
6.02214
×
10
23
⋅
m
o
l
−
1
=
8.36
×
10
20
individual aspirin molecules.
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