Why is water considered to be a universal solvent? water is an ionic substance, so all substances dissolve in it. water is nonpolar covalent, so all substances dissolve in it. water is polar covalent, so many ionic and polar substances dissolve in it. water is ionic, so covalent and ionic substances dissolve in it.
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 12:20
Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.
Answers: 3
Chemistry, 22.06.2019 13:30
Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?
Answers: 3
Chemistry, 23.06.2019 00:30
In a ball-and-stick molecular model, what do the sticks represent?
Answers: 1
Why is water considered to be a universal solvent? water is an ionic substance, so all substances...
Mathematics, 17.03.2021 23:50
Mathematics, 17.03.2021 23:50
Chemistry, 17.03.2021 23:50
Mathematics, 17.03.2021 23:50
English, 17.03.2021 23:50
English, 17.03.2021 23:50
Chemistry, 17.03.2021 23:50
Mathematics, 17.03.2021 23:50
Mathematics, 17.03.2021 23:50
Physics, 17.03.2021 23:50
Computers and Technology, 17.03.2021 23:50
Mathematics, 17.03.2021 23:50
History, 17.03.2021 23:50
Mathematics, 17.03.2021 23:50
Mathematics, 17.03.2021 23:50
History, 17.03.2021 23:50