Chemistry, 14.09.2021 01:40 kluckey8494
58:00 The table describes how some substances were formed. Substance Description P Formed by boiling pure water Q Formed by combining three hydrogen atoms to every nitrogen atom R Formed by adding 5 g of sugar to 1 L of water S Formed by compressing carbon under high pressure Based on the given descriptions, which substance is most likely a mixture? P Q R S
Answers: 2
Chemistry, 21.06.2019 22:00
Which of the following statements is true about planckβs law
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 14:00
Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20βc. what is the molar mass of this gas?
Answers: 2
58:00 The table describes how some substances were formed. Substance Description P Formed by boiling...
Advanced Placement (AP), 30.10.2020 17:30
Mathematics, 30.10.2020 17:40
Mathematics, 30.10.2020 17:40
English, 30.10.2020 17:40
History, 30.10.2020 17:40
History, 30.10.2020 17:40
Biology, 30.10.2020 17:40
Social Studies, 30.10.2020 17:40
Social Studies, 30.10.2020 17:40
Mathematics, 30.10.2020 17:40