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Step2247 [10]
2 years ago
7

PLEASE HELP!! this is on USAtestprep a) b) c) d)

Chemistry
1 answer:
kaheart [24]2 years ago
3 0
The answer is D!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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How many 20.0-g ice cubes are required to absorb 47.0 kJ from a glass of water upon melting?
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Hello!


The number of 20-g ice cubes required to absorb 47 kJ from a glass of water upon melting is 7 icecubes


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We are going to clear from the equation of the released heat, the mass of ice (m). The specific latent heat of fusion of ice is 336 kJ/kg:


Q=m*L\\ \\ m=\frac{Q}{L}=\frac{47 kJ}{336 kJ/kg}=0,1399 kg=139,88 g\\   \\ 139,88g*\frac{1 icecube}{20g}=6,99=7icecubes


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