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What is the concentration of Br- (aq) in a solution prepared by mixing 75.0ml of 0.62M iron (III) bromide with 75.0ml of water? Assume volumes are additive.
a particle has a velocity equal to 0.25 c and a wavelength of 1.3 x 10^-16 m. Calculate the mass of the particle in kilograms. c=3.0 x 10^8 m/s
Determine how many moles of SO 3 are formed if 12.24 moles of O 2 react with excess SO 2 ,? use the balance equation given as 2SO 2 (g)+O 2 (g)----> 2SO 3 (g)
Show mathematically that addition of a common ion will decrease the ionization of a weak acid OR a weak base
A cook wants to heat 1.89 kg of water from 31.0 C to 100.0 C If he uses the combustion of natural gas (which is exothermic) to heat the water, how much natural gas will he need to burn? Natural gas produces 49.3 kJ of heat per gram. (For the sake ..
standard-state free energy of formation data to calculate the acid-dissociation equilibrium constant
An FM station broadcasts classical music at 89.1 MHz (megahertz, or 106 Hz). Find the wavelength (in m, nm, and A) of these radio waves. m nm A
The end point is reached when 31.52 ml of the thosulfate solution is added. What is the molar concentration of the bleach solution. What is its mass percent
The oxidation of hyrogen by oxygen is one of the most-used reactions in fuel-cell technology. The overall reaction, which is given below, has a (Delta)G^o value of -474 kJ/mol.
the consentration of the reactant to drop to 25% of its inital value. what is the rate constant for reaction?
Why are active firefighters likely to experience the adverse health effects from inhaling 300 ppm of carbon monoxide faster than nonactive off-duty firefighters
A football is inflated to a pressure of 1.00 x 10^3 torr in a room at 25 degrees C. If the game is played at 10 degrees C, what will the pressure in the ball be, neglecting any volume change in the ball and assuming that it doesn't leak?
Draw an example of the change in molar volume during a 1st and 2nd order phase transition vs. temperature.
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