Answers: 2
Chemistry, 21.06.2019 18:00
Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?
Answers: 3
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
In an internal combustion engine, octane reacts with oxygen gas to produce carbon dioxide and water...
English, 15.10.2019 13:50
Social Studies, 15.10.2019 13:50
History, 15.10.2019 13:50
Chemistry, 15.10.2019 13:50
History, 15.10.2019 13:50
Mathematics, 15.10.2019 13:50
English, 15.10.2019 13:50
Health, 15.10.2019 13:50
History, 15.10.2019 13:50
Mathematics, 15.10.2019 13:50
Social Studies, 15.10.2019 13:50
History, 15.10.2019 13:50