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Q. A 65.00 g ice cube at 0°C is heated until 55g has become water at 100 °C and 10 g has become steam at 100°C. How much energy was added to accomplish the transformation?

Q. Assume a typical hummingbird has a lifespan of 4.00 years and an average heart rate of 1300 beats per minute. Compute the number of times a hummingbird's heart beats in its life, and express it in scientific notation. Make use of 365.24 days per year.

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