Chemistry, 08.02.2022 14:00 karinapenn8259
Prepare2diluted solutions of Ca(OH)2 with(0.030Nin250ml) and (0.22N in 1000ml) prepared by using 3g in 500ml m. wt.=74 g\mol
Answers: 2
Chemistry, 21.06.2019 21:30
Put these processes of the water cycle in the correct order, starting at the point where the water is in the lake: 1. water evaporates into the atmosphere 2. rain, snow, or other precipitation falls 3. water collects into larger bodies of water 4. water vapor condenses into liquid water
Answers: 1
Chemistry, 21.06.2019 21:30
How air particles exert a pressure on the inside of the balloon
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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 15:30
The identities of substances are the same before and after which type of change
Answers: 1
Prepare2diluted solutions of Ca(OH)2 with(0.030Nin250ml) and (0.22N in 1000ml) prepared by using 3g...
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