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Chemistry
Chemistry
Problem
38.2
g
38.2\ \text{g}
38.2
g
of
Na
2
B
4
O
7
⋅
n
H
2
O
\text{Na}_2\text{B}_4\text{O}_7 \cdot n\text{H}_2\text{O}
Na
2
B
4
O
7
⋅
n
H
2
O
dissolved in
250
g
250\ \text{g}
250
g
water shows an elevation in b.pt by
0.582
∘
C
0.582^\circ\text{C}
0.58
2
∘
C
. If
K
f
K_f
K
f
of water is
0.52
kg molality
−
1
0.52\ \text{kg molality}^{-1}
0.52
kg molality
−
1
, then
n
n
n
is: a. 6 b. 5 c. 8 d. 10
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