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a plutonium-239 atom may emit a photon of light with a wavelength of 24.0 pm when it undergoes nuclear fission. What is the frequency of this radiation?
Calculate the volume of 0.540 M sodium hydroxide solution contains 11.5 grams of sodium hydroxide?
If 4.00 ml of vinegar needs 42.0ml of 0.110M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.10qt sample of this vinegar?
how many N2 molecules can be produced after the explosion of 2.37 kg of NH4NO3? (Molar mass of NH4NO3 is 80.06 g/mol.)
A voltaic cell consists of a Mn/Mn2+ electrode (E°= -1.18 V) and a Fe/Fe2+ electrode (E°= -0.44 V). Calculate [Fe2+] if [Mn2+] = 0.050 M and Ecell = 0.78 V at 25°C.
how much energy is required to warm 100g of H2O from 20 degrees celcius to 80 degrees celcius if it is initially in a 140g glass flask? the specific heat of water is 4.18 J/g degree celcius.
if the freezing point of a .106 m CH3COOH solution is -.348 degrees Celsius, calculate the percent of the acid that has undergone ionization?
potassiumm chlorate (KClO3) decomposes to form potassium chloride and oxygen gas. if 5.4 moles of potassium chlorate decompose, how many moles of oxygen could be produce.
A 2.32 L balloon contains helium at 1.00 atm and 25°C. How many grams of helium are contained in the balloon.
A weak monoprotic acid is exactly neutralized by 11.17mL of a standardized 0.1455M NaOH solution. If the Ka of the acid is 0.00084, what is the pH at the half-equivalence point.
The evaporation of water H2O(l) ->H2O(g) is endothermic: Change in T degree +44.01 kJ Determine the minimum mass of water (in ) has to evaporate to absorb 183 joules of heat?
The water level in a graduated cylinder initially at 220 rises to 279 after a piece of lead is submerged. What is the mass in grams of the lead.
what is the molarity of a sodium hydroxide solution if 34.85 mL of the soution neutralizes 1.883 grams of pure KHP?
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