Natural Science CLEP Prep Practice Exam

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Prepare for the CLEP Natural Science Exam with our comprehensive study materials and practice questions. Test your knowledge and ace the exam by mastering key concepts.

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What would be the total internal energy of 10 moles of a monatomic ideal gas at 25°C?

300 KJ
25KJ
1500 KJ
600 KJ

The correct answer is: 1500 KJ

The total internal energy of an ideal gas is directly proportional to the number of moles present. Therefore, increasing the number of moles from 1 to 10 will also increase the total internal energy. The internal energy of a monatomic ideal gas is also directly proportional to the temperature. As the temperature increases, so does the internal energy. Since the temperature is given in Celsius, it needs to be converted to Kelvin by adding 273 to get the correct answer. Options A and B are incorrect because they do not take into account the number of moles or the conversion to Kelvin. Option D is also incorrect because it does not take into account the increase in internal energy due to the increased number of moles. Therefore, option C is the correct answer as it takes into account both the number of moles and the temperature conversion to Kelvin.