How is the percent of ethylene glycol in de-icing fluid related to water’s freezing point ?
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Chemistry, 16.09.2019 04:30 stephliu721
How is the percent of ethylene glycol in de-icing fluid related to water’s freezing point ?
Answers: 1
Chemistry, 22.06.2019 03:40
Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)
Answers: 3
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If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?
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Particles vibrate in a rigid structure and do not move relative to their neighbors.
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Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel
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