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You throw a ball of mass 145 g upward. When the ball is 2m above the ground, headed upward (the initial state), it's speed is 19m/s. Later, when the ball is agin 2 m above the ground, this time headed downward (the final state); it's speed is 19 m/s. What is the change in the kinetic energy of the ball from initial to final state? DeltaK =
Calculate the volume of 1M solution of HCL needed for 1 unit shift of the pH of the following solutions: A. 100 mL of 0.01 M solution weak acid (pKa = 6) and 0.05 M of its sodium salt
Consider the following gas-phase reaction: NO2(g) + N2O(g) 3 NO(g) Using data from Appendix C of your textbook calculate the temperature, To, at which this reaction will be at equilibrium under standard conditions
Write equations for simple chemical tests that would distinguish between (a) Benzylamine and... Benzene x 1346 Aniline x 237
Question- Determine if HNO3 can dissolve each of the following metal samples. If so write the balance chemical reaction showing how the metal dissolves and determine the minimum volume of 6M HNO3 needed to completely dissolve the samples.
Explain how many electrons per atom are delocalized in the sea of electrons model for the subsequent metals. a) iron b)vanandium c) silver
A constant pressure calorimeter having a heat capacity of 74.2 kJ/K is used to measure the energy released from burning a compound in excess oxygen to form CO2(g) and H2O(l).
NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.049 M in NH4Cl
what is the maximum mass of an object traveling at 241 m·s-1 for which the de Broglie wavelength is observable?
If 132 mL of wet H2 is collected over water at 24°C and a barometric pressure of 736 torr, how many grams of Zn have been consumed?
What is the rate of formation of carbon dioxide over the specified time period in this reaction
The rate constant of a first-order reaction 7.60 *10^-4 s^-1 at 350 degree celcius. If the activation energy is 134 KJ/mol, what is the temperature at which its rate constant is 9.70 *10^-4 s^-1
Problem- In order to favor product formation, one of the reactants, acetic acid, is used in excess. Give two reasons why it is preferable to add excess acetic acid as opposed to excess isopentyl alcohol.
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