Chemistry, 23.06.2019 10:30 genyjoannerubiera
4al + 3o2 → 2al2o3 what does the "3" in front of o2 stand for? a) it indicates that there are 5 oxygen atoms after you add the coefficient and the subscript. b) it indicates that that there are are total of 6 oxygen atoms all bonded together as a single molecule. c) it indicates that there are 3 oxygen molecules chemically bonded to each other in the reaction. d) it indicates that there are 3 separate oxygen molecules in the reaction.
Answers: 2
Chemistry, 22.06.2019 02:30
98 ! and brainliest plz ! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?
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
4al + 3o2 → 2al2o3 what does the "3" in front of o2 stand for? a) it indicates that there are 5 ox...
Mathematics, 16.09.2020 01:01
Mathematics, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01
English, 16.09.2020 02:01
English, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01
English, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01
Spanish, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01
History, 16.09.2020 02:01
Mathematics, 16.09.2020 02:01