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1. If you were an advisor at a global summit on alternative energy, which source of energy would you recommend countries invest more money in? Make a case for why it is the best choice in 3-5 paragraphs below. Include the following in your answer:
write separate oxidation and reduction half reactions for the procedure used in the test for nitrate ions.3 no3-aq 8
One radio station operates on an assigned frequency of 88.1 megahertz while another operates on an assigned frequency of 1460 kilohertz. What is the ratio of the larger to smaller value?
What are the values of [SO42- ], [Pb2+ ], and [Sr2+ ] in a solution at equilibrium with both substances? the answer is not 5.*10^-4 or 7.94*10^-4 because mastering chem keeps marking me wrong for that. Can you work it out nicely.
The normal sublimation point of solid acetylene is -84 C. Figure out the answers to the questions below and then pick the correct statement from the multiple choices(i) Is the sublimation of solid acetylene an endothermic or an exothermic process
what is the entropy change for freezing 4.25 g of c2h5oh at 158.7 k? h -4600 jmol.answer in units of
Question- A) You is using a Geiger counter to measure the activity of a radioactive substance over the course of several minutes. If the reading of 400. Counts has diminished to 100. Counts after 62.6 minutes what is the half-life of this substanc..
If you were going to build a system to check the effectiveness of automobile catalytic converters on cars, what substances would you want to look for in the car exhaust?
When 5.07 g of an unknown non-electrolyte is dissolved in 50.0 g of benzene, the boiling point the boiling point increased to 83.8 degrees C from 80.1 degrees C. If the Kbp of the solvent is 2.53 K/m, calculate the molar mass of the unknown solute..
A sample of material contains contains 20 mg of Iodine ^131. Calculate: A) The number of I ^131 atoms initially present. B) The activity in becquerels and curies.
Select the amino acid in the subsequent pairs that would more likely to appear on the solvent-exposed surface of a protein and define why you choose that answer.
box contains a mixture of small copper spheres and small lead spheres. the total volume of both metals is measured by
What is the mass of oxygen required or the complete combustion of 200cm3 of propane measured at r.t.p.?
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