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Find the de Broglie wavelength (in nm) associated with an electron that is moving with a velocity of 2110 km/s. The electron rest mass is 9.11 x 10-31kg.
Note, electrons having this speed would need to be treated as waves in atoms because the wavelength is on the order of the size of atoms.
Solve an equilibrium problem (using an ICE table) to calculate the pH of each solution:a solution that is 0.165M in HC 2 H 3 O 2 and 0.120M in KC 2 H 3 O 2.
Calculate the percent (by volume) of air that would be displaced when all of theN2 (l) get evaporated. it is given that Liquid nitrogen has a density of 0.807 g/mL
how many calories are used to heat a 50g sample of water from 8.1 degrees celius to 27.4 degrees celcius?
what is the volume of the capillary tube and its associated error? What measurement must be made to a higher precision to decrease the error in the volume?
The temperature of a lead fishing weight rises from 26 degrees Celsius to 38 degrees Celsius as it absorbs 11.3 J of heat. What is the mass of the fishing weight in grams.
How many grams of HCl are produced according to the following equation, H2 + Cl2 = 2 HCl, when 4.0 g of hydrogen reacts completely.
what is the minimum number of Kilo Joules needed to change 40 grams of water 100 C to steam at the same temperature and pressure?
Sodium chlorate,NaClO3, decomposes when heated to yield sodium chloride and oxygen, a reaction used to provide oxygen for the emergency breathing masks in many airliners
Determine how many moles of each Na+ and Cl- are in 1.00L of the saline solution?
starting from alcohol that contains four or less carbon atoms and from benzene and toluene,
A piece of lead is placed into a graduated cylinder. The level of the liquid rises from 235 to 305 mL. What is the mass in grams of the lead if the density of lead is 11.3g/cm3?
What is the volume of 135 mL of oxygen gas at 113°C and 870. mm Hg if the conditions are adjusted to STP? Assume the amount of gas is held constant.
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