Will medal and like
the half-life of a certain radioactive element is 800 years. how old...
Chemistry, 01.12.2019 18:31 peterblessd6868
Will medal and like
the half-life of a certain radioactive element is 800 years. how old is an object if only 12.5% of the radioactive atoms in it remain?
Answers: 3
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One similarity and one difference between an element and a mixture of elements
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Chemistry, 22.06.2019 21:40
A5 mole sample of liquid acetone is converted to a gas at 75.0Β°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 75.0Β°c, what is the total energy required for the conversion?
Answers: 3
Chemistry, 22.06.2019 22:30
Which of the following molecules is polar? c3h7oh c2h5cooh
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