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Question 20

0.92g of ethanol raised the temperature of 100g of water from 298K to 312.3K when burned completely. What is the heat of combustion of ethanol? [C = 12; H = 1; 0 = 16; specific heat capacity of water = 4.2Jg-1K]

  • A.+300KJmol
  • B.+3000KJmol
  • C.-300KJmol
  • D.-3000KJmol
Objective

Question details

Exam body
OAU
Subject
Chemistry
Year
2009/2010
Question no.
#20
Type
Objective
Previous · Q19The decreasing order of the magnitude of energy changes is Next · Q21 The highest level of molecular disorderliness is found in

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