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Explain how many coulombs (C) of electrical charge must pass through an electrolytic cell to reduce .44 mol Ca 2+ ion to calcium metal?
a typical deposit of cholesterol c27h46o in an artery has a mass of 3.90 mg. how many molecules of cholesterol are
it says that isothiocyanatech3ncss carbon atom actively responses to material that has nonbonding electronsuch as oh-.
Constant pressure molar heat capacity of a compound is found to vary with temp, according to molar cp= 15.25 +.138* T--2.21*10^4/T^2 Calculate the enthalpy change when 1 mole of this compound
Which of the following pairs of amino acids would carry a negative charge on their side chain at pH 8.0?
The point in the titration when buffering is least efficient occurs at the stoichiometric point, or equivalence point, in the reaction. This point is often called a point of inflection because there is a shift in the curvature from convex to conca..
A solution of sodium thiosulfate, Na2S2O3, is 0.4282 M. 13.82 mL of this solution reacts with 36.67 mL of I2 solution. What is the molarity of the I2 solution
the elemental mass percent composition of ascorbic acid (vitamin C) is 40.92% C, 4.58% H, and 54.50% O. Determine the empirical formula
What mass of sodium chloride, NaCl, is needed to make 389. g of a 3.89%(m/m) NaCl solution? (atomic masses: Na = 22.99, Cl = 35.45)
Give the structure of the major and minor organic products formed when HBr reactw with (E)-4,4-dimethyl-2-pentene in the presence of peroxides.
for the synthesis of potassium alum advantage is taken by the fact that aluminum hydroxide is amphoteric meaning it can
If a 1.7 reaction vessel initially contains 730 of at 25 , what partial pressure of will be present in the vessel after 200 minutes?
Calculate the apparent molecular weight of the unknown hydrocarbon on the basis of the freezing-point depression experiment.
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