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A nurse is testing if people will get sick within two weeks of receiving the flu shot. What is the independent, dependent, and control of this experiment? In addition, what is a testable statement that could possibly solve this problem?
explain in detail, using thermodynamics principles, why the mixing of pure chemicals to form homogeneous mixture is a so-called spontaneous process
For the reaction N2(g)+O2(g) >>> 2NO2(g), Kc=8.3X10^-10 AT 25*C. What is the concentration of N2 gas at equilibrium when the concentration of NO2 is five times the concentration of O2 gas
How many total moles of ions are released when the following sample dissolves completely in water? 0.382 mol K2HPO4 (Assume that the hydrogen phosphate ion remains intact in solution.)
The term solution is synonymous with which of the following. A. compound B. element C. homogeneous mixture D. heterogeneous mixture
State equations that show what happens when the subsequent solid ionic compounds dissolve in water. Include states in your answers.
Determine the equilibrium constant and the equilibrium mole fraction of NO at the temperature from part c. K at 298K is 4.03*10^-31
What is the equilibrium concentration of chloroacetic acid, HC2H2O2Cl, in a solution prepared by dissolving 0.0277 mol of HC2H2O2Cl in 1.00 L of water
Calculate the Î"S for a gas in a closed system that is an ideal monatomic gas initially at P= 5 atm, V=5L, and T = 310 K which expands to V= 10 L and its temperature is increased to 390 K
You want to prepare 250 ml of buffered solution composed of NH3 and NH4Cl with a pH of 10.1. If you start with 250 ml of 0.15 M NH3 solution, how many grams of NH4Cl salt must you add. Round answer to two decimals.
the melting point of water is 0.000c at 1 atmosphere. if 11.64 grams of chromiumii acetate 170.1 gmol are dissolved in
In a Diesel engine, atmospheric air is quickly compressed to about 1/20 of its original volume. Estimate the temperature of the air after compression, and explain why a Diesel engine does not require spark plugs.
A flask containins a mixture of He(g) and Ne(g). The total pressure of gas in the flask is 950 torr. The mixture is 65.0% Ne(g) by mass. What is the partial pressure of He(g) in the flask
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