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Suppose that in a particle accelerator, a proton could be accelerated to 70.0% the speed of light. What is the frequency of this proton? (Assume the mass of the proton to be 1.673 x 10^-27 kg)
a compound called pyrene has the empirical formula c8h5 . when 4.04 g of pyrene is dissolved in 10.00 g of benzene the
the equilibrium constant for the following reaction has the value 2.1103 at a particular temperature.h2g f2g 2 hfgwhen
the specific heat of ethanol is 2.44jg times degrees celcius. how many kilojoules of energy are required to heat 50.0 g
(heatcapacity of water : 4.184 j/g/k) if the final temperature of the system is 30c, what is the specific heat capacity of the alloy
A chlorine-oxygen compound is found to have a chlorine to oxygen mass ratio of 1.109. Which of the following chlorine to oxygen mass ratios is possible for a different chlorine-oxygen compound
All particles in the mixture have a uniform spherical radius of 0.072 mm. a) Calculate the mass of a single particle of Na2SO4 and the number of Na2SO4 particles in the mixture.
Describe a situation where a substance changed between the solid and liquid states or between liquid and gas states? Can you describe an example of when a substance changed between the gas and solid states? Let's see how many different examples we..
What mass percent of ethylene glycol in water must be used to reduce the freezing point of the mixture to -5.0degrees c?
Which indicator would be the best to use when titrating ammonia with nitric acid? Kb of NH3 is 1.8 x 10-5.
What is the pH of a buffer prepared by mixing 57.4 mL of 0.050 M sodium bicarbonate and 10.2 mL of 0.10 M NaOH. (Carbonic Acid: pKa1 = 6.35, pKa2 = 10.33)
A 2.50-L container is filled with 187 g argon. If the pressure is 10.0 atm, what is the temperature?
This is for the dissolution of (NH_4)(NO_3) in water. If 4.52 mole of NH_4 NO_3 are dissolved, how many total moles of ions are produced
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