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You go out and spend a bucket of money on a new stereo amplifier that advertises that it can produce maximum volumes 20 dB greater than your current system. How many times as powerful must this amplifier be?
Compute the kinetic energy of 1.1 kg of helium gas at 25 C. If this energy could be captured as well as used to accelerate a 1000.0 kg automobile, explain how fast would the car travel on a flat surface (ignoring friction)
write the balanced chemical equation for each of the following equilibrium constant expressions: a)Kc=[CO2][H2]/[CO][H2O. b)Kc=[H2][F2]/[HF]^2. c)Kc=[O2][HCl]^4/[Cl2]^2[H2O]^2. d)Kc=[CS2][H2]^4/[Ch4][H2S]^2.
What is the heat absorbtion for 100 g liquid water that is frozen to ice at 0 degrees C and 1 atm
Problem- An alternative method to sanitizing pool water is to increase the salinity and pass an electric current through the water as it recirculates. Why would this be an effective treatment
What is the enthalpy of combustion (in kJ/mol) for acetone (CH3COCH3) under standard conditions (water is produced as a liquid)? Use the appendix in your textbook, do not enter units, and answer with 5 significant digits.
For the reaction, 2 A(g) + 2 B(g) => C(g) + 3 D(g), the following data were obtained at constant temperature.Experiment Initial [A], mol/L Initial [B], mol/L Initial Rate, M/min
A 98 L sample of dry air cools from 138°C to -30.°C while the pressure is maintained at 2.85 atm. What is the final volume?
List the following aqueous solutions in order of increasing boiling point: 0.121 m C6H12O6 (glucose), 0.042 m LiBr, 0.052 m Zn(NO3)2
Write reactions that describes the dissolution of solid zinc hydroxide with aqueous ammonia, and determine the numerical value of the equilibrium constant for the reaction
Select all of the correct statements about the relative acid strengths of pairs of acids from the choices below. HCl is a stronger acid than H2S because Cl is more electronegative than S. H2SO4 is a stronger acid than H2SeO4 because S is more electro..
When the flask is allowed to cool the vapor condenses and aire again refulls the flask. Re weighing the flask and figure out the the wight of the unknown vapor which filled the flask during the boiling. Explain why it is not necessary to know the w..
A sample of hard water contains about 2.0x10-3MCa2+. A soluble fluoride-containing salt such as NaF is added to "fluoridate" the water. What is the maximum concentration of F- that can be present without precipitation CaF2? Ksp of CaF2=5.3x10^-11.
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