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Problem- Frequency of an electromagnetic radiation emitted by electric power lines is 60.0 Hz. Calculate the wavelength of this radiation in a) kilometers and b) micrometers.
Write solution with complete explanation of required steps
determine the mass of silver phosphate formed when 4.33 g of silver nitrate is reacted with 22.7 ml of .118 m
Diagram a hydrolysis reaction (using expanded structural formula) of butene. Be sure to include all the possible products formed. Name the product(s).
To be effective, intracellular signaling molecules must be inactivated/removed when their effects are no longer needed. Provide the methods by which this occurs for the following classes of intracellular messengers
This experiment calls for the use of 2mL of 2-chloro-2methylpropane. The molar mass of 2-chloro-2methylpropane is 92.57g mol-1, and its density is 0.847g mL-1. 1) Calculate the number of moles of 2-chloro-2methylpropane used in this experiment.
If the density of an unknown gas is .0985 g/l at 25 degrees Celsius and 725 torr, calculate the density of the unknown gas at 48 degrees celcius and 740 torr
The reaction takes place in a bomb calorimeter where 4.50g of glucose are burned. What is the heat capacity of the bomb if the temp. of the water in the bomb increases from 22.75 degrees Celsius to 25.32 degrees Celsius? I used qrxn = -Ccal*change..
The pH of blood is 7.35. It is maintained in part by the buffer system composed of carbonic acid (H2CO3) and the bicarbonate (hydrogen carbonate, HCO3-) ion. What is the ratio of [bicarbonate]/[carbonic acid] at this pH
what product would you expect to obtain from the mixed claisen condensation between ethyl acetate and diethyl oxalate?
As Canadian oil reserves are consumed, we may start to use oil from the tar sands, the Arctic and offshore under the oceans. Explain what do you see as some of the disadvantages and risks of developing and using these sources
Gases azomethane decomposes in a first order reaction when heated: CH3NNCH3 --> N2 + C2H6. The rate constant is 0.0216 min-1. If the initial quantity of azomethane in the flask is 2.00 g, how much remains after 0.0500 hour
The data obtained are 20.36, 19.98, 20.26, 20.18, 19.72, 19.86% Cl. (a) what is the standard deviation of this data. (b) find the 90% and 99% confidence intervals for the percentage of chloride in the sample. Must show work for credit
Question- Calculate the ph of a mixture containing 30ml 0.10M NaOH + 30ml 0.10M HC2H3O2 (Ka of HC2H3O2 = 1.8 x 10^-5)
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