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A 0.5 kg ball is kicked from rest and it achieves a velocity of 20 m/s. What is the ball's change in momentum? Show your work.
It is known that the ^2P terms lies at 670.78nm above the ground state. whcih is 1s^2 2s^1 ^2S. calculate the ionization energy ofthe ground state atom
Calculate the concentration of permanganate when 1g of potassium permanganate is dissolved in 50ml of water.
A 195mg sample of a non-electrolyte isolated from throat lozenges was dissolved in enough water to make 10.0mL of solution at 25 degrees Celsius. The osmotic pressure of the resulting solution was 4.83atm. Calculate the molar mass of the compound.
One tablespoon of peanut butter has a mass of 15g . It is combusted in a calorimeter whose heat capacity is 130kJ/ degrees C . The temperature of the calorimeter rises from 22.1 degrees C to 25.2 degrees C. Find the food caloric content of peanut ..
Show the calculation of the new temperature of a gas sample which has an original volume of 700 ml when collected at 730 mm and 35oC
If a solution was found to be acidic, what must be true about the relationship between the concentration of hydrogen ions (H+) and hydroxide ions (OH-)?
In an experiment the stoichiometry of potassium chlorate will be investigated to use the results to analyze a potassium chlorate-potassium chloride mixture. Potassium chlorate is a compound containing the elements potassium
a sample of 36.0 mg of an organic compound that has molar mass 84.0 gmol is dissolved in 10.0 ml of h2o. solution is
What was the PH of the original solution. What are the concentration of all of the following ions at the equivalence point
A student is asked to prepare a buffer solution at pH=8.60 using one of the following weak acids HA (kA=2.7*10^-3), HB (Ka = 4.4*10^-6) and HC (Ka = 2.6 *10^-9).
For HCl represented as a harmonic oscillator, it has a vibrational frequency of 2885 cm-1. The vibrational frequency of DCl (where D is twice the mass of H) should be (assuming HCl and DCl have the same force constant):
Consider what happens when liquid Br 2 dissolves in H 2 O. (a) What type of attract ive forces must be overcome in the liquid H 2 O?
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