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An artist's statue has a surface area of 15 ft2. The artist plans to apply a gold plate coating to the statue and wants the coating to be 25 µm thick. How many grams of gold will be required for the
radioactive isotopes often occur together in mixtures. suppose a 190 sample contains with a half-life of 12 days and
How many grams sodium chloride (NaCl) should be used in preparing 24 L of a solution containing 150 mEq/L. (atomic wt of sodium is 23, atomic wt of chloride is 35.5)
2.9 mol Fe(OH)3 and 7.7 mol H2SO4 react according to the equation 2 Fe(OH)3 + 3H2SO4 ->Fe2(SO4)3 + 6H2O. If the limiting reactant is Fe(OH)3, calculate the amount of Fe2(SO4)3 formed.
Calcium fluoride Ca F 2 is an insoluble salt. The Ksp is 3.4 x 10 -11. Calculate the molar solubility of calcium fluoride. If the concentration of fluoride in fluoridated drinking water is 1 x 10 -5 M and the calcium ion concentration in blood is 2..
A 0.3459 g tablet that contains bicarbonate generates 1.24 x 10?3 moles of CO2. What is the percent bicarbonate in the tablet? Bicarbonate is 61.0138 g/mol.
A 10.20-mL sample of sulfuric acid from an automobile battery requires 35.99-mL of 2.33 M sodium hydroxide solution for complete neutralization. What is the molarity of the sulfuric acid? Sulfuric acid contains two acidic hydrogens.
Interpret the infrared and NMR spectra of benzocaine. What is the structure of the precipitate that forms after the sufuric acid has been added
The activation energy of a certain reaction is 45.4kJ/mol. At 28 degrees celcius, the rate constant is 0.0150s^?1. At what temperature in degrees Celsius would this reaction go twice as fast?
for nh4br dissolving in water deltahsoln is17kjmol. write an equation that represents the solubility equilibrium for
filling atomic orbitals creates an electronic structure pattern that makes elements with similar configurations but
The unit of denier is a way to characterize fibers, defined as the weight in grams of a length of 9000 meters. Nylon 6 has an average specific gravity of 1.13.
What is the molar concentration of a solution prepared by dissolving 0.6593 g of NaCl in a 100-mL volumetric flask
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