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What is the velocity of an electron that has a de Brogile wavelength of 4.22 nm? The mass of an electron is 9.11 x 10^-31 kg
Nitrogen dioxide decomposes at 6.50 x 10-3 M s-1 during the reaction: 2NO2(g) --> 2NO(g) + O2(g) Answer the following questions:
If 5.40 mol calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2) will be produced?
Calculate ΔH and ΔStotal when two iron blocks each with mass of 1.00kg, one at 25'C and one at 250'C are placed in contact with each other in an isolated container.
use the activity series of metals to write a balanced chemical equation for this single replacement reaction
Hydrogen gas was cooled from 150C to 50 C. It's new volume is75 mL. What was it's original volume?
Carbon sequestration technologies are being actively explored by researchers as methods to remove CO2 from the atmosphere, thereby diminishing the greenhouse effect.
If 10.0mL of acetic acid, CH3COOH, is diluted with water to a total volume of 200.0mL, what is the percent by volume of acetic acid in the solution.
A 1.784 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl aqueous solution.
The activation energy for the reaction NO 2 (g)+CO 2 (g)?NO(g)+CO(g) is E a = 100kJ/mol and the change in enthalpy for the reaction is ΔH = -200kJ/mol. What is the activation energy for the reverse reaction?
When determining the pressure of dry hydrogen gas, explain how the measured atmospheric pressure is corrected for the presence
Describe at least 4 methods that could be used to attempt to separate the oil and water at home. Based on the four methods postulate which method would work better than the others.
Suppose a 500 mL solution contains 0.50 millimoles of Co(NO3)2, 100.0 millimoles of NH3, and 175.0 millimoles of ethylenediamine. What is the concentration of Co 2+ (aq) in the solution?
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