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Changes of state

Changes of state

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Question 12

A cryosurgical probe uses the vaporization of liquid nitrogen to destroy abnormal tissue. The specific latent heat of vaporization of liquid nitrogen is 1.99 × 105 J/kg.

During a brief medical procedure, 35.0 g of liquid nitrogen at its boiling point is completely vaporized.

Calculate the thermal energy absorbed by the nitrogen during this process.

A

5690 J5690 \text{ J}5690 J

B

6965 J6965 \text{ J}6965 J

C

69 650 J69\,650 \text{ J}69650 J

D

6 965 000 J6\,965\,000 \text{ J}6965000 J

Markscheme

Changes of state Questions

  1. GCSE
  2. /Physics
  3. /Changes of state

27 exam-style questions on OCR GCSE Physics Changes of state. Each one has a worked solution and a mark scheme showing where the marks go.

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