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A stock solution is prepared by adding 35 mL of 1.5 M NaNO2 to enough water to make 49 mL. How many moles of NO2- are in 30 mL of the stock solution?
Without referring to a table, select from the following list the gas that has the largest value of b in the van der Waals equation: CH4, O2, H2O, CCl4, Ne.
If 2 volumes of 0.1 M monobasic potassium phosphate, KH2PO4, are mixed with 1 volume of 0.1 M dibasic sodium phosphate, Na2HPO4, what will be the pH of the mixture?
What is the Vmax of this enzyme when enzyme concentration equal to 0.3 mg ml-1? b) When the above reaction was carried out in the presence of 2.5 ?M inhibitor, the Vmax is 0.03 M sec-1. What kind of inhibitor is this. Justify your answer with prop..
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
a student is asked to calculate the amount of heat involved in changing 10 grams of liquid bromine at room temperature (22.5 C) to vapor at 59 C. To do this, one must use tables 8.1 and 8.2 for information on the specific heat, boiling points
Consider the reaction of NaNO2 in water, using the Kb of NO-2. Calculate ?G° for the hydrolysis at 298K.
Osmosis occurs when the solvent molecules move from a solution of higher solute concentration to a solution of lower solute concentration.
how many grams of ammonium sulfate can be produced in 30 mol of h2so4 react with excess nh3 according to the equation
A lead weight hanging from a string is suspended in the water and the mass reading on the scale increases to 127.9 g. The lead weight falls from the string, rests on the bottom of the beaker and the reading becomes 309.4 g. What is the mass of wat..
The experimental rate law for the decomposition of nitrous oxide (N2O) to N2 and O2 is rate = k[N2O]^2. Two mechanisms are proposed: I. N2O
The DNA Polymerase is an enzyme that accurately replicates your DNA. It has only one active site! Describe how four bases with different geometries can fit into a single active site and how does the enzyme differentiate between the four bases
Select the statement below that describes the magnetic environment of hydrogens bonded to the sp2 hybrid carbons of pi systems relative to alkyl hydrogens bonded to sp3 hybrid carbons:
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