The heat capcity of liquild water is `75.6 J //mol .K`, while the enthalpy of fusion of ice is `6.0 kJ//mol`, What is the smallest number of ice cubes
The heat capcity of liquild water is `75.6 J //mol .K`, while the enthalpy of fusion of ice is `6.0 kJ//mol`, What
is the smallest number of ice cubes at ` 0^(@)` C, each containig ` 9.0g` of water ,needed to cool 500 g of liquild
water from j `20^(@)` to `0^(@)` C ?
A. 1
B. 7
C. 14
D. None of these
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1 Answers
Correct Answer - C
`DeltaU = q + W`
` = 100 -[1 xx 1 + 1//2xx 1]"bar" m^(3)" "("1 bar " m^(3) = 10^(5) J= 100 k)`
`= - 50 kJ`
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Answered