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1. The following reaction has achieved equilibrium. Predict the effect on the formation of phosphorous pentachloride (increase, decrease or no effect) for the stated changes to the system: PCl3(g) + Cl2(g) ? PCl5(g) a) The concentration of phosphorous trichloride is increased. b) The concentration of chlorine is decreased. c) The volume of the container in which the reaction is taking place is suddenly made smaller. d) The pressure of the system is increased by adding one atmosphere of gaseous nitrogen to the container.
2. Newton's third law of motion can be stated like this: "For every action, there is an equal and opposite reaction." How are Le Chatelier's Principle and Newton's third law similar? How are they different?
Calculate how many such photons are emitted per second by a 80.0-W incandescent lightbulb if we Assume that the light has an average wavelength = 510.0 nm, .
how many grams of KO2 are needed to produce 180.0 L of O2 at 18.0 C and 1.00 atm
At equilibrium, the concentration of [H2]= 0.6 M. What is the EQUILIBRIUM concentration for [H2],[I2]and [HI]? H2(g) + I2(g) 2 HI(g) [HI] =
Determine How much Na2EDTA x 2 H2O must be weighed to form exactly two litres of 0.0500 M solution? FW=372.24
Copper has a specific heat of 0.092 cal/(g·°C). When 52.7 cal of heat is added to a piece of copper, the temperature increases from 22.4°C to 38.6°C. What is the mass of the piece of copper
A compound is heated to produce gas whose molecular mass is to be determined. The gas is collected by displacing water in a water filled flask inverted in a trough of water
How many moles of ethane (C2H6) would be needed to react with 62.3 grams of oxygen gas?
A meteorological ballon contains 250.0L He at 22 degrees celsius and 740.0mm Hg. If the volume of the ballon can vary according to external conditions
solution if its conjugate acid. What is the pH of this combined solution? Always give two numbers after the decimal place
if 3.55 mL of vinegar needs 43.0 mL of 0.130 M sodium hydroxide to reach the equilavence point in a titration, how many grams of acetic acid are in a 1.6qt sample of this vinegar?
An unknown metal with a mass of 28g absorbs 58J of heat. Its temperature rises from 31.1C to 39.9C. Calculate the heat capacity of the metal ?
A procedure called coulogravimetric analysis combines a weight determination with a measurement of the quantity of electricity in a controlled-potential electrolysis to analyze bromide-chloride mixtures
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