Flori has one bucket of paint outside and one bucket of paint in her garage. Both paint buckets are the same size and have the same number of molecules. She brings the bucket in from outside and is going to stack it on top of the bucket in the garage. The diagram above shows the buckets now, before they touch. Use the information in the diagram to answer the question. How does the temperature of the garage bucket compare with the temperature of the outside bucket before the buckets touch? What will happen after the buckets have been touching for a while?
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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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Flori has one bucket of paint outside and one bucket of paint in her garage. Both paint buckets are...
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