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The potential energy of a proton and an electron separated by a distance r is given by Coulomb's Law: (-e^2/4πε0)/r where e is the magnitude of the charge on an electron and ε0 is the vacuum permittivity (a fundamental constant). What is the operator for this potential energy?
Given the concentration of either hydrogen ion or hydroxide ion, use the ion product constant of water to calculate the concentration of the other ion at 298K.
What is the value of Delta S when 2.7g of CH4 is compressed from 29.0 L to 18.0 L at a constant temperature of 100 C?
Draw three six-carbon alkenes, each of which forms the same product whether it reacts with HBr in the presence of a peroxide or with HBr in the absence of a peroxide,
Comparing potassium nitrate (KNO3) and sodium chloride (NaCl), which chemical's solubility (in water) is most affected by change in temperature.
A gas mixture composed of helium and argon has a density of 0.605g/L at a 741mmHg and 298K .What is the composition of the mixture by volume?
Assume that the density of the mixed solutions is 1.00 g/mL, that the specific heat of the mixed solutions is 4.18 J/(g celcius), and that no heat is lost to the surroundings. The deltaHrxn for the neutralization of NaOH with H2SO4 is -114 kJ/mol ..
Acetylene gas (C2H2) is produced as a result of the following reavtion. CaC2(s) + 2H2O(l) yield C2H2(g) +Ca(OH)2(aq)
How many grams of water can be cooled from 30 degrees C to 18 degrees C by the evaporation of 49g of water? (The heat of vaporization of water in this temperature range is 2.4kJ/g . The specific heat of water is 4.18J/k
What are the missing coefficients for the skeleton equation below?
A protein contain the following amino acids 61 LYS 75 GLU 26 TYR 22 HIS 45 PRO 47 PHE 29 ARG 67 GLY 77 ASP 65 ALA 24 THR 25 MET 71 VAL 56 ILE 12 SER 83 LEU A) What is its net charge at pH 13
Given the information below, what is the value of the unknown equilibrium constant?
If 545 mL of oxygen gas is collected at 21ºC and 754 mm Hg, what is its volume at STP?
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