Chemistry, 22.07.2021 14:00 zahnjoey2470
Cho hỗn hợp gồm alcl3 và fecl3 trình bày cách tách từng muối riêng ra khỏi hỗn hợp
Answers: 3
Chemistry, 22.06.2019 00:00
Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.
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
Chemistry, 22.06.2019 09:30
Which formula can be used to calculate the molar mass of hydrogen peroxide
Answers: 1
Chemistry, 22.06.2019 12:30
Avariable that is not being directly tested during an experiment should be changed varied experimented controlled
Answers: 1
Cho hỗn hợp gồm alcl3 và fecl3 trình bày cách tách từng muối riêng ra khỏi hỗn hợp...
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