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Welcome to my TEAS Exam Prep blog. I hope it will help you prepare very well for the pre-nursing entrance exam, popularly known as the TEAS exam. This is one of the entrance exams required by some schools for those who want to pursue careers in the nursing field in the USA. I will attempt to break down the review materials into manageable parts so that you can systematically and efficiently prepare for the test with less stress. I will guide you to prepare for the entire content of the test. Hopefully, you will be able to pass after going through these series.


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Friday, May 23, 2014

QUESTIONS FOR THE DAY

  1. Calculate the amount of heat needed to increase the temperature of 250g of water from 20o C to 56o C. Specific heat capacity = 4.18 J oC-1 g-1
  2. Calculate the specific heat capacity of copper given that 204.75 J of energy raises the temperature of 15 grams of copper from 25o C to 60o C.
  3. 216 J of energy is required to raise the temperature of aluminium from 15o to 35oC. Calculate the mass of aluminium. (Specific Heat Capacity of aluminium is 0.90 JoC-1g-1).
  4. The initial temperature of 150g of ethanol was 22oC. What will be the final temperature of the ethanol if 3240 J was needed to raise the temperature of the ethanol?
    (Specific heat capacity of ethanol is 2.44 JoC-1g-1).
Answers:
  1. q = 250 x 4.18 x (56 - 20) = 37,620 J or approx. 38 kJ
  2. 204.75 = 15 x C x (60 - 25)
    C = 0.39 JoC-1 g-1
  3. 216 = m x 0.90 x (35 - 15)
    m = 216 ÷ 18 = 12g
  4. 3240 = 150 x 2.44 x (Tf - 22)
    Tf = 30.9oC
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