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Calculate the [H ] and pH of a 0.000251 M hydrazoic acid solution. Keep in mind that the Ka of hydrazoic acid is 2.20 × 10-5
The inside fluid temperature is 223 degrees celsius while the outside fluid temperature is 57 degrees celsius. Calculate the heat lost by the tube per meter of length.
Why is molality used in the equations describing freezing-point depression and boiling-point elevation? Explain in detail and explain the reason why molarity is nto used.
which give you an X^3 term. Is there another way of calculating the problem without getting involved with Imaginary numbers and Real number values for X.
Calculate the change in internal energy, (Delta E) for the reaction. What is the enthalpy of formation per mole of product for the reaction
One mole of an ideal gas is contained in a cylinder with a movable piston. The temperature is constant at 77°C. Weights are removed suddenly from the piston to give the following sequence of three pressures
the temperature of the surrounding remains essentially constant during the process. Calculate deltaSsystem, deltaSsurroundings and deltaStotal.
Problem- When a metal atom becomes an ion, or an ion becomes an atom, there is a transfer of electrons. In the preceding reactions, draw circles around the metal atoms which lost electrons and boxes around the metal ions which gained them (reactan..
calculate the number of carbon atoms in 3.8 moles of
The estimated average concentration of NO2 in air in the United States in 2006 was 0.016 ppm. Calculate the partial pressure of the NO2 in a sample of this air when the atmospheric pressure is 755 torr (99.1 kPa).
If the formula for magnesium fluoride is MgF 2 and the formula for potassium chlorate is KClO 3 , then what is the formula for magnesium chlorate?
When 50.0 mL of a 0.3000 M AgNO3 solution is added to 50 mL of a solution of MgCl2, and AgCl precipitate forms immediately. The precipitate is then filtered from the solution, dried, and weighed.
A racquetball court is 20 ft wide. If we consider only motion along this direction and treat the ball as a particle in a box, if the ball weighs 1.4 ounces, what quantum number corresponds to a racquetball hit 100 km per hour and what speed would ..
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