Chemistry 9701 · AS & A Level · Chemical energetics

Chemical energetics — practice question

$200\,\text{g}$ of water is initially at $25^{\circ}\text{C}$. The water is then heated to $75^{\circ}\text{C}$ by burning $2\,\text{g}$ of ethanol. What is the amount of energy transferred to the water?

  • A$0.418\,\text{kJ}$
  • B$10.4\,\text{kJ}$
  • C$41.8\,\text{kJ}$
  • D$62.7\,\text{kJ}$

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