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Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?

Which is an example of a highly unstable isotope that is often used in fission reactions?