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Liquid helium at 4.2 K has a density of 0.147 g/mL. Suppose that a 2.50-L metal bottle that contains air at 105K and 2.0 atm pressure is sealed off. If we inject 120.0 mL of liquid helium and allow the entire system to warm to room temperature (25°C), what is the pressure inside the bottle?
What mass of oxygen gas is required in order to release 6670 kJ of heat to the surroundings by the following reaction
draw the organic product of the following reaction between (1s,3s)-chloro-3methylcyclopentane and methanethiol
A scuba diver with a lung capacity of 5.2 L inhales a lungful of air at a depth of 45 m and a pressure of 5.5 atm. If the diver were to ascend to the surface (where the pressure is 1.0 atm) while holding her breath.
Which do you think would be larger and why? The first ionization energy, IE1, of Ne,The second ionization energy, IE2, of Na
How many moles of luminol are present in 2.00 L of the diluted spray?
what the volume of 0.109m HNO3 that is required to reat completely with 2.5g Barium hydroxide
What is the kinetic energy in joules of a 1183 motorcycle moving at 63.
Compute the Ka for the acid if the pH of the resulting solution = 6.36. and determine the pH of the resulting buffer
Give the number of electrons, Protons and neutrons in 24NA and give the electron configuration of the following A: A1 B: F- (- is at the top)
acidifying with dilute H2SO4 and titrating with a 0.01804 M KMnO4 solution. 33.15 mL of the permangate solution was needed to reach the end point of the titration. What is the actual molar concentration of the H2O2 solution?
Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.95 M B(aq) with 0.95 M HCl(aq).
Compute mole fraction of caffeine(C 8 H 10 N 4 O 2 ), the molarity of the solution
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