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Chemistry, 21.06.2019 20:20
Concerning the 10.0 ml of 0.50 m nacl to 100 ml of solution: when a solution is diluted, does it change the number of moles dissolved?
Answers: 3
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 22:30
Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 s−1. part a part complete what is the half-life for this reaction?
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Chemistry, 23.06.2019 05:50
What is the molecular formula of ferrous nitrate and ferric nitrate
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Chemistry, 22.03.2020 22:37
Mathematics, 22.03.2020 22:37
Mathematics, 22.03.2020 22:37
Mathematics, 22.03.2020 22:37
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English, 22.03.2020 22:39
Mathematics, 22.03.2020 22:41
Mathematics, 22.03.2020 22:41
Mathematics, 22.03.2020 22:41
English, 22.03.2020 22:41