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a) The average speed of a K atom in a molecular beam is measured to be 629 m/s. Calculate the kinetic energy of a K atom in the beam?
b) Assuming that the molecules in the beam move one dimensionaly, what is the temperature of the beam?
What will happen to the equilibrium as OH- ions are added?
What is the pH of a solution of a strong acide like tintric acid, HNO3, which is 5.6 x 10^-4 M? [HNO3 is a strong acide, so it is completly ionized in aqueous solution
What will the percentage of mercury (I) ions remaining in solution be?
Approximately how many grams of calcium nitrate were required to react totally with 40.0 g of sodium carbonate? How many grams of product were formed at that point? Do your answers appear to obey the Law of Conservation of Matter?
For a solution having .0025 equivalents/liter total alkalinity (contributions from HCO3-, CO3-- and OH- (hydroxide)) at [H+] = 4.69E-11, what is the percentage contribution to alkalinity from CO3--?
The heat combustion of acetylene, C2H2(g), at 25°C, is -1299 kJ/mol. At this temperature, ?H°f values for CO2(g) and H2O(l) are -393 and -286 kJ/mol
You have 250.0 ml of 4.00 M sugar solution. You add 217.3 ml of water to this solution. Determine the concentration of the sugar solution after the water has been added
A 6 cm string is fastened at both sides is plucked. What is the wavelength of the n = 3 standing wave? How many nodes does it contain.
How many milliliters of water must be added to a stock solution of 6.00 M HNO3 in order to prepare 500 mL of 0.200 M HNO3 by dilution.
A solution is prepared by dissolving 285 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
determine the ph of the following solutions, showing calculations.
a certain anesthetic contains 64.9 percent C, 13.5 percent H, and 21.6 percent O by mass. at 120 grades celcius and 750 mmHg, 1.00 L of the gaseous compound weighs 2.30g. What is the molecular formula of the compound?
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