3. a) Calculate the internal energy of 4 mol of a polyatomic gas at 12 °C [ans: 28420.2 J] b) Calculate the change in internal energy for 3 moles of hydrogen gas if it is heated from 273K to 323K. [ans: 3116.25 J]
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![Given R= 8.31 J mol·l K-' mol', k=1.38 x10-23 J K', NA = 6.23 x 1023 mol-1
3. a) Calculate the internal energy of 4 mol of a polyatomic gas at 12 °C [ans: 28420.2
J]
b) Calculate the change in internal energy for 3 moles of hydrogen gas if it is heated
from 273K to 323K. [ans: 3116.25 J]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe9ae79ea-5449-4aca-838b-4982c8c5d619%2Fbdf4c0ea-9e46-4939-83ee-b206c551ab32%2Fqhfoxdb_processed.jpeg&w=3840&q=75)
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