Chemistry, 22.02.2021 18:40, charlesgtro7066
How many calories are required to raise the temperature of 35.0g sample of copper from 75 degrees to 55 degrees?
Answers: 3
Chemistry, 21.06.2019 21:00, Gghbhgy4809
What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?
Answers: 1
Chemistry, 22.06.2019 03:40, allyyzz
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
Chemistry, 22.06.2019 09:00, bibhu42kumarp7o4ss
At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure
Answers: 1
How many calories are required to raise the temperature of 35.0g sample of copper from 75 degrees to...
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