What is the approximate ph of a solution prepared
What is the approximate pH of a solution prepared by adding 20 mL of 0.10 M NaOH to 200 mL of 0.10 M HCl?
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Palladium crystallizes with a face-centered cubic structure. It has a density of 12.0 g/cm^3, a radius of 138 pm, and a molar mass of 106.42 g/mol. Use these data to estimate Avogadro's number in atom/mol.
Write the expression for the equilibrium constant, Kc, for the following chemical reaction?
If the open-tube manometer in the figure below contains a nonvolatile silicone oil (density = 1.30 g/cm3) instead of mercury (density = 13.6 g/cm3), what are the pressures in the flask as shown in parts a and b in torr, atmospheres, and pascals? (
Calculate the molarity of the solution. How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion?
Two moles of a gas are compressed isothermally and reversibly at 300 K from an initial volume of 10 dm3 to a final volume of 1 dm3. If the equation of state of the gas is P(Vm-b) = RT, with b = 0.03 dm3 mol-1. Calculate the work done on the system
Determine the functional form of Phi(t) and the frequency of a pendulum bob whose mass is m and is attached to a massess rod of length l.
How many grams of dry need to be added to 2.30 of a 0.400 solution of ammonia, to prepare a buffer solution that has a of 8.80? for ammonia is?
A gas in a sealed container has a pressure of 125 kPa at a tempurature of 30.0 degrees celcius. If the pressure in the container is increased to 201 k Pa, what is the new tempurature?
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Potassium has which of the following effects? Need Assignment Help? Group of answer choices lowers heart rate lowers LDL lowers blood pressure lowers blood sug