Chemistry, 21.07.2020 03:01 EmiSiddiqi4037
For the reaction of 2Na20, if you have 18.0 g of Na, how many grams of O2 are needed for reaction?
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 12:00
Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.
Answers: 1
Chemistry, 22.06.2019 15:10
Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?
Answers: 1
Chemistry, 22.06.2019 22:30
What if it is did darwin used to support his theory of evolution
Answers: 1
For the reaction of 2Na20, if you have 18.0 g of Na,
how many grams of O2 are needed for reaction?...
Spanish, 23.01.2021 01:20
Mathematics, 23.01.2021 01:20
English, 23.01.2021 01:20
Mathematics, 23.01.2021 01:20
English, 23.01.2021 01:20
English, 23.01.2021 01:20
History, 23.01.2021 01:20
History, 23.01.2021 01:20
Computers and Technology, 23.01.2021 01:20
Mathematics, 23.01.2021 01:20
English, 23.01.2021 01:20