Chemistry, 11.10.2020 23:01, brooke7768
Find the average atomic mass for Cl if 75.78% of Cl atoms are Cl-35 with a mass of 34.96885271 u and 24.22% are Cl-37 with a mass of 36.96590260 u.
Answers: 3
Chemistry, 22.06.2019 03:40, allyyzz
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 18:00, ameliaxbowen7
Heat is the total potential energy of a substance that can be transferred. true false
Answers: 1
Chemistry, 23.06.2019 05:00, rosezgomez97
Asolution is made by dissolving 2.3 moles of sodium chloride (nacl) in 0.155 kilograms of water. if the molal boiling point constant for water (kb) is 0.51 °c/m, what would be the boiling point of this solution? show all the steps taken to solve this problem.
Answers: 1
Find the average atomic mass for Cl if 75.78% of Cl atoms are Cl-35 with a mass of 34.96885271 u and...
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