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What are the highest and lowest possible energy of a photon that can be emitted by a hydrogen atom?
Inexperienced athletes might try consuming three high energy drinks just before a race but veteran marathon runners know this would impair their performance. Why?
Why are unsaturated carbonyl compounds UV active but saturated esters and ketones are not UV active
A solution of 0.264 M NaOH is used to neutralized 54.0 mL H3PO4 solutions. if 1.0 mL of NaOH is required to reach end point what is the molarity of H3PO4
What is the pH at the equivalence point? what is the pH at the 10.0 mL base added? what is the pH at the 30.0 mL base added?
What is the equation for Coulombic force and why is it important in chemistry? 4. What is the charge on the chloride ion and why does it have this charge
the values of Hfo given in kJ/mol, calculate the value of ?Go in kJ for the combustion of 1 mole of propane to form carbon dioxide and gaseous water at 298 K.
A 295mLflask contains pure helium at a pressure of 742torr . A second flask with a volume of 465mL contains pure argon at a pressure of 717torr .
What is the partial pressure of water present at equilibrium, if the reaction is initiated in a 26 L container with a partial pressure of H2 equal to 14.5 atm and excess iron oxide, Fe3O4.
Two particles with charges q1 and q2 are separated by distance d. Rank these scenarios according to the magnitude of the electrostatic (coulombic) potential energy.
A gaseous sample of this element is bombarded by photons of various energies (in these same units). Match each photon to the result of its absorption (or lack thereof) by an n=1 electron.
What is the change in internal energy (in J) of a system that absorbs 0.836 kJ of heat from its surroundings
The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 7.60 mL of a 0.330 M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
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