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a) What is the difference between a mechanical wave and an electromagnetic wave? In complete sentences.
b) Give one example of each:
c) What is the difference between a longitudinal and transverse wave? In complete sentences.
d) Give one example of each:
Gold sells for $1120/oz. One ounce is equal to 28.35g. The molar mass of gold is 196.97g/mol. 1 moldovian franc contains 0.567g of gold. If 1 franc = $1.42, how many atoms of gold are presents in 0.010 moldovian francs?
What are the products of the nucleophilic substitution reaction of 1-chlorobutane and NaI in acetone?
What concentration of chloroacetic acid, ClCH2COOH, should be added to a 0.010 M ClCH2COONa solution to prepare a buffer of pH 4.00? Ka = 1.4 X 10-3
The astronaut throws a rock straight up with a velocity of +16.0 m/s and measures a time of 20.7 s before the rock returns to his hand.
A 40-year-old manager, at a prominent legal firm in L.A., experiences abdominal pain post lunch. He goes to the restroom a couple of times, but continues to experience pain and cramps. He eventually decides to get himself examined.
Presume that a pollutant enters the environment at a steady rate R as well as that, once there, its concentration decays by a first-order reaction. At long times the concentration of the pollutant turn into constant at some nonzero value.
The "flap" end nuclease recognizes the junction between RNA and DNA near the 5' end of an Okazaki fragment. Name two structural features that might be recognized by the enzyme. Briefly explain.
Calculate the pH of the solution made by adding 0.50 mol of HOBr and 0.30 mol of KOBr to 1.00 L of water.
What is the theoretical yield of ethyl chloride in the reaction of 19.1g of ethylene with 51g of hydrogen chloride. (For ethylene: MW=28.0amu, for hydrogen chloride MW=36.5amu
Why do primary alkyl halides typically undergo Sn2 substitution reactions more rapidly than do secondary or teritary alkyl halides?
In which pair of substances below does the substance with the greater entropy not follow the substance with the lesser entropy
Twenty-five milliliters of liquid nitrogen (density = 0.807g/mL ) is poured into a cylindrical container with a radius of 11.9cm and a length of 17.2cm . The container initially contains only air at a pressure of 760.0mmHG (atmospheric pressure) a..
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