Chemistry, 07.05.2021 19:30 Emilyvite6251
10 POINTS FOR CORRECT ANSWER WITH A FOLLOW, NO LINKS OR REPORT What is the mass of an object with a specific heat of a 0.45 J/g ○C with whose temperature rises from 23○C to 38○C when 3640 J of heat are absorbed?
Answers: 2
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 14:00, asanchez4292
What type of matter is made of only one kind of atom
Answers: 2
10 POINTS FOR CORRECT ANSWER WITH A FOLLOW, NO LINKS OR REPORT
What is the mass of an object with...
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