Question 4 of 10
Which question asks for an opinion?
A. How much electricity does the average...
![Chemistry](/tpl/images/cats/himiya.png)
Question 4 of 10
Which question asks for an opinion?
A. How much electricity does the average nuclear power plant
generate?
B. Should the government invest more money in nuclear energy than
in solar energy?
C. What are the by-products generated by the manufacture of solar
panels?
D. How efficient is the most advanced solar energy technology?
![answer](/tpl/images/cats/otvet.png)
Answers: 1
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Chemistry, 21.06.2019 23:30, mgavyn1052
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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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The atomic number, or number, is the described as the number of in the nucleus of an chemical element.
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