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Byju's Answer
Standard VII
Physics
Measurement of Volume
How many gram...
Question
How many grams of oxygen will be formed by the action of 12 g of sodium peroxide on water? Calculate also the volume of the gas at NTP.
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Solution
2
N
a
2
O
2
+
2
H
2
O
⟶
O
2
+
4
N
a
O
H
2
×
78
g
32
g
156
g
of
N
a
2
O
2
produces
32
g
of
O
2
,
12
g
of
N
a
2
O
2
produces
=
32
×
12
156
=
10.66
g
.
Density of
O
2
at NTP
=
1.428
g
/
m
L
.
M
a
s
s
D
e
n
s
i
t
y
=
V
o
l
.
10.66
1.428
=
7.46
m
L
Vol. of
O
2
at NTP is
7.46
m
L
.
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