Chemistry, 21.08.2019 23:30 yunggin8243
The experiment that shot heavy particles at a thin sheet of gold foil was responsible for leading to the discovery of the what?
Answers: 1
Chemistry, 22.06.2019 00:30
Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?
Answers: 2
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 15:00
Describe what happens to the molecules as water goes from ice to liquid to vapor. be sure to explain what happens to the temperature during the phase changes.
Answers: 2
Chemistry, 22.06.2019 22:30
The vapor pressure of ethanol is 1.00 × 102 mmhg at 34.90°c. what is its vapor pressure at 61.61°c? (δhvap for ethanol is 39.3 kj/mol.)
Answers: 2
The experiment that shot heavy particles at a thin sheet of gold foil was responsible for leading to...
Mathematics, 20.10.2020 04:01
Business, 20.10.2020 04:01
Mathematics, 20.10.2020 04:01
Mathematics, 20.10.2020 04:01
Social Studies, 20.10.2020 04:01
Mathematics, 20.10.2020 04:01
Social Studies, 20.10.2020 04:01
Mathematics, 20.10.2020 04:01
History, 20.10.2020 04:01
Mathematics, 20.10.2020 04:01