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Calculate the molarity (M) of a solution prepared by dissolving 1.00g of ethanol (C2H6O) in enough water to give a final volume of 101 mL.
A radio station's channel, such as 100.7 FM or 92.3 FM, is actually its frequency in megahertz (MHz), where 1MHz=1^6 Hz = 1s^-1. Calculate the broadcast wavelenght of the radio station 97.90 FM Green light has a frequency of about 6.00*10^14 s^-1 what is the energy of green light? Hospital X-ray generators emit X-rays with wavelength of about 15.0 nanometers (nm ), where 1nm=10^-9 m. What is the energy of the X-rays?
Calculate the pH and the concentrations of all species present in a 0.19-M solution. The acid dissociation constants are K1 = 5.9 10-2 and K2 = 6.4 10-5.
Styrene, phenylethene, is treated with H3PO4, an acid whose conjugate base is a poor nucleophile.
The solution density = 1.013 g/mL and suppose that the density of pure water =1.00 g/mL. Determine the molality of this solution?
which solution can conduct an electrical current?
Use the graph of solubility of O2 in water vs. temperature to calculate the value of Henry's law constant KH
Determine at what temperature must a balloon be heated to have six Litres volume consider that the balloon was at the temperature of 25 degree Celsius and volume of two litres initially?
Buffering Action of Proteins, We did this experiment in class but I want to see if the results seem reasonable and, if so, why they were not more varied.
if 525 g of NaOH are dissolved to a final total of 50.0L what is the molarity of the solution
A cube of osmium metal 1.500cm on a side has a mass of 76.31g at 25°C. Calculate the mass of 0.1500L of benzene at this temperature.
An aqueous antifreeze solution is 35.0% ethylene glycol (C2H6O2) by mass.
How many grams of NaN3 are required to produce 20.0 ft3 of nitrogen gas if the gas has a density of 1.25 g/L?
What is the rate constant of a first-order reaction that takes 375 for the reactant concentration to drop to half of its initial value?
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