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Calculate the amount of heat required to convert 2kg of ice at 2oC to water...

Physics
JAMB 1987
Calculate the amount of heat required to convert 2kg of ice at 2oC to water at 0oC. [specific heat capacity of ice = 2090Jkg-1 oC-1, specific latent heat of fusion of ice = 333kJkg-1]
  • A. 666J
  • B. 8360J
  • C. 666 000J
  • D. 674 360J
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Correct Answer: Option D
Explanation
Q = mL + mc\(\theta\)

= (2 x 333000) + (2 x 2090 x 2)

= 674 360J
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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