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Which of the following units is not an official si unit? mole liter kilogram ampere
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About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?
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How much energy is required to vaporize 2 kg of copper? a 4730 kj b 207kj c 9460 kj d 414kj
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How many atomic mass units are equal to 1.672×10−24 g of protons?
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