A mining crew extracted two different types of minerals from underground. Then, they transferred the same amount of energy into both minerals. Why did mineral A change while mineral B stayed the same? Explain what happened to the molecules of both minerals. HHHelp quick
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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.)
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Chemistry, 23.06.2019 06:10, jamesgotqui6
2. what two items do autotrophs take from the environment to produce their food? 3. what are the two items that are released during transpiration from leaves? 4. what are the two membranes of the system? a. what are the two stages of photosynthesis? what are the two parts of photosynthesis?
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Chemistry, 23.06.2019 08:00, codybrocs9624
Can anyone answer these questions? ? i need it before 1: 00pm today
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Chemistry, 23.06.2019 08:20, debramknoxx
At which temperature would a reaction with ah= -220 kj/mol and as=-0.05 kj/(mol-k) be spontaneous?
Answers: 2
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