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Chemistry, 22.06.2019 22:00
The volume of an unknown substance in a sealed glass jar is 50 milliliters. the volume of the jar is 200 milliliters. which state of matter could the substance be?
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Chemistry, 23.06.2019 02:00
Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?
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Chemistry, 23.06.2019 04:31
One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus
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Mathematics, 07.04.2020 22:01
Social Studies, 07.04.2020 22:01
History, 07.04.2020 22:01
Mathematics, 07.04.2020 22:01