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Tardigrade
Question
Chemistry
One requires 0.01 mole of Na2CO3. Mass of Na2CO3.10 H2O to be taken is
Q. One requires 0.01 mole of
N
a
2
C
O
3
. Mass of
N
a
2
C
O
3
.10
H
2
O
to be taken is
5244
212
Some Basic Concepts of Chemistry
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A
1.06 g
10%
B
2.86 g
63%
C
1.80 g
21%
D
3.02 g
6%
Solution:
0.01
mol of
N
a
2
C
O
3
≡
0.01
mol of
N
a
2
C
O
3
⋅
10
H
2
O
Molar mass of
N
a
2
C
O
3
⋅
10
H
2
O
=
46
+
12
+
48
+
180
=
286
g
m
o
l
−
1
Mass of
0.01
mol of
N
a
2
C
O
3
⋅
10
H
2
O
=
2.86
g