Chemistry, 01.12.2021 03:00, Haleysaraya1
What volume of H2 would be collected at 22.0°C and a pressure of 713 torr if 2.65 g of zinc react according to the equation: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)
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 12:00, kayla32213
Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt
Answers: 1
Chemistry, 22.06.2019 20:30, lexibyrd120
Water undergoes a large change in density at 0 ∘ c as it freezes to form ice. calculate the percent change in density that occurs when liquid water freezes to ice at 0 ∘ c given that
Answers: 2
What volume of H2 would be collected at 22.0°C and a pressure of 713 torr if 2.65 g of zinc react ac...
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