Determine the sign of delta
Without doing any calculations, determine the sign of Delta S_{{rm{sys}}} for each of the following chemical reactions.2KClO3(s) --> 2KCl(s) + 3O2(g)
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You are surprised by the fact that no 32P is found in the transcribed RNA! What does this result tell you about the mechanism of the new RNAP?
The rotten smell of a decaying animal carcass is partially due to a nitrogen-contained compounded called putrescine. Elemental analysis of putrescine showed that it consisted of 54.50% C, 13.73% H, and 31.77% N. Calculate the empirical formula of
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0.0431 moles of sucrose are dissolved in 400.0 g of water. The solution density is 1.013 g/mL and you can assume that the density of pure water is 1.00 g/mL. What is the molality of this solution?
What are the half-reactions for these redox processes?
A buffer solution is prepared by mixing 50.0 mL of 0.022 M C6H5COOH and 20.0 mL of 0.032 MNaC6H5CO2. (a) What is the of the buffer solution? (b) What are the pH and the change in pH after the addition of 0.054 mmol HCl to the buffer solution? (c)
Using the inverse square law of radiation, what Geiger counter reading would you get for a radioactive material. How many protons and neutrons are present in the plutonium-238 nucleus?
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