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What is being asked? Using the values of the effective molar absorptivities you determined from your slopes and the values of the absorption you obtained for the mixture at the spectral maxima of 434 nm and 618 nm, solve the 2x2 simultaneous linear equations for the concentrations of bromothymol blue and thymol blue.
How many grams of NaNO2 form when 429 g NaNO3 react? The yield is 90.%.
what is the percent yield of a reaction in which 228 g phosphorus trichloride reacts with excess water to form aqueous
What is the maximum number of electrons in an atom whose highest-energy electrons have the principal quantum number n=5
What is the initial concentration (in M) when 15.3 mL of a potassium hydroxide solution was diluted with 15.1 mL of solvent to a final concentration of 0.561 M? Assume the volumes are additive.
how do you know weather it undergoes the E1 mechanism or the E2 mechanism?
A gas occupies 672 mL at 785 mmHg. What volume would it occupy at 453 mmHg at constant temp??
In a second 50.00mL aliquot, the ClO4- was reduced to Cl- with V2(SO4)3. Titration of the reduced sample required 40.12mL of the AgNO3 solution. Calculate the %KCl and %KClO4 in the sample
1. if a chemical cold pack weighing 28grams and at a temperature of -2c was left in a 25c room for 3 days what would be
The combustion of carbon with excess oxygen forming carbon dioxide is exothermic. C(s) + O2(g) => CO2(g) ?Hrxn = -393 kJ If 5,284kJ of heat is needed from the combustion, how much carbon (g) must be consumed
Calculate concentration of soil organic matter in content given the concentration of organic carbon
Determine the volume(mililiters) required to prepare 200.0ml of a 0.250M KNO3 solution from a 6.00M KNO3
Calculate the standard cell potential for Mg(s) + Fe2+(aq)--->Mg2+ + Fe(s) Express the standard potential numerically in volts.
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