1.

Ratio of change in internal energy of a substance from 15oC to T and from T to 10oC is 2, what is T?

A. t5<sup>o</sup>C
B. t15<sup>o</sup>C
C. t20<sup>o</sup>C
D. t30<sup>o</sup>C
Answer» B. t15<sup>o</sup>C


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