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Question- In the ammonium ion, the nitrogen atom has donated an electron. Would you expect the geometry of the ammonium ion (NH4-) to differ from the methane molecule? Why?
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Question- Determine the molar solubility of Al(OH)3 in a solution containing 0.0500 M AlCl3. Ksp (Al(OH)3) = 1.3x10^-33
Calculate the number of grams of NaOH per 100ml to give a pH8.0 solution if pure water at pH7.0 is used in the experiment. Repeat this calculation for a pH6.0 solution using HCl.
Explain what the enthalpy of neutralization of reaction CH3COOH is + NaOH -> CH3COONa + H2O? In KJ/mol
What is the vapor pressure of a solution with a benzene to octane molar ratio of 2:1. (benzene= 280 mmHg ; octane= 400 mmHg)
An experiment requires 12.0 g of cyclohexane, whose density at 25 degrees C is 0.7781 g/mL. What volume of cyclohexane should be used
What mass of water (in grams) is contained in 2.9 L of the vapor above this solution at 55 C. The vapor pressure of pure water at 55 C is 118 torr. (Assume a van't Hoff factor of 1.9 for NaCl.)
If an athlete weighs 133lb and has 15.0\% body fat by weight, how many pounds of fat does the athlete's body contain
What will the new volume of the gas be if the temperature is increased to 150C and the pressure decreased to 0.95 atm?
Sulfamic acid, HSO3NH2, and sodium nitrite, NaNO2, should not be brought together as solids for safety reasons, why is water added to the vial containing your unknown sample as well as to the Erlenmeyer flask containing sulfamic acid
Classify each of the following binary compounds by the oxidation number of hydrogen. NH3 CaH2 MgH2 H2O HCl NaH H2 CH4
Explain what is the number of possible orientations of the orbital angular momentum with L=1000? Explain what is the closest allowed angle between L and z axis
explain the molecular mechanism of how ATP synthase produces ATP
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