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Chemistry, 22.06.2019 14:00
8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.
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Chemistry, 22.06.2019 19:00
Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?
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Chemistry, 23.06.2019 06:00
Give one example of a pure (exact) number and of an estimated (measured) number.
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Chemistry, 23.06.2019 12:30
Is the genie in the bottle experiment a physical or chemical change/reaction?
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What is the definition of a Lewis acid?...
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