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Question: Describe the principle of operation of record and reproducer used in the laboratory.
An electron is confined to a one dimensional box of length L. It falls from the second energy level to the ground state, and releasee a photon with a wavelength of 322 nm
Draw a Lewis structure for each of the following compounds. specify the hybrid orbitals that overlap to form each bond. then label each bond as sigma or pi bond. also, draw all non-bonding hybrid orbitals.
if the heat of neutralization of aqueous benzoic acid is 54.6 kjmol what is the enthalpy of ionization on benzoic
During a basal metabolic test, Steve consumes 460. L of O2.- What is Steve's body mass?- What is the change in his BMR oxygen intake if he loses 15.0 kg of body mass?
Calculate the magnitude of the average force on a bumper that collapses 0.270 m while bringing a 840-kg car to rest from an initial speed of 1.9 m/s.
What is the pH of a solution made by adding 6.21 grams of sodium fluroide, NaF, to 391 mL of 0.317 M hydrofluoric acid, HF? (Assume no change in volume takes place.)
consider the following reactionpcl5g -gt pcl3g cl2g .at equilibrium pcl5 2.00 m and pcl3 cl2 1.00 m. if suddenly
Compute the expected pH when 0.5 mL of 0.1 M HCL is added to 30.0mL pure water. Do the same computation when the same amount of HCl is added to 30.0mL of your original .05M buffer. Compare the Computed pH to the actual measured pH
Calculate the hydroxide ion concentration of a sample of nitric acid that has a pH of 1.64.
an environmental chemist needs a carbonate buffer of ph 10.00 to study the effects of acid rain on limestonerich soils.
How many grams of Na3PO4 is needed to produce 575mL of a solution that has a concentration of Na+ ions of 1.50M?
Problem- Consider 2.0 mol of N2 that at 25 degrees Celsius and 1atm mind to the equation of state P(V-nb)=nRT where b = 0.03913 mol^-1. Find 1) The change in internal energy with respect to the change in volume during an isothermal process
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