Chemistry, 27.08.2020 23:01 kraigstlistt

Does every investigaion in science follow the scintific method?

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Chemistry, 22.06.2019 01:00, Bettie55

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

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Chemistry, 22.06.2019 17:00, princessakosua2

The msds for glacial acetic acid says that it is a flammable liquid that can severely burn any human tissue it comes in contact with. it reacts with bases, various metals, and strong oxidizing agents. its vapors can form explosive mixtures with air.

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Chemistry, 22.06.2019 19:20, johnkings140

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)

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Chemistry, 23.06.2019 00:00, scottykinkade7860

Mercury turns to a vapor at 629.88 k. how much heat is lost when 75.0 g of mercury vapor at 650 k condenses to a liquid at 297 k?