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The present limit of detection of THC in urine is 20 nanograms of THC per milliliter of urine (20 ng/mL). Calculate the molarity of the solution at the limit of detection if the molecular weight of THC is 315 g/mol
Diphenylethyne can be prepared from meso-1,2-dibromo-1,2-diphenylethane, by double E2 elimination via the corresponding alkene. a) Which alkene is initially formed?
calculate the empirical formula for the bismuth oxide, 89.7% Bi and 10.3 O. and percent composition
How do I calculate the product distribution calculations of the three peaks? Or the product ratios? The first peak was at 0.600, second at 0.95. Those are the retention times
Calculate the final hydrogen ion concentration of a solution after 25.0 mL of 0.500 M HCl is treated with 40.0 mL of 0.0500 M Ba(OH)2(aq) and diluted to 100.0 mL.
Using the ?H for the reaction of NaOH + HCl and the reaction of NaOH + NH4Cl How do you calculate an enthalpy change for reaction of HCl + NH3?
Compare the relative rate of the foward (EtOH as a substrate) and back reaction (with acetylaldehyde). Use the Michaelis-Menten equation to solve for v when ethanol is 99mM and acetylaldehyde is the substrate and its concentration is 1mM
Description of Intermolecular forces, What parts of the calcium chloride are attracted to what parts of the water molecule when calcium chloride dissolves
The density of titanium metal is 4.51 g/cm^3 at 25 degrees C. What mass of titanium displaces 64.0 mL of water at 25 degrees C?
Silver chloride often used in silver plating contains 75.27% Ag. Calculate the mass of silver chloride in grams required to make 4.0 g of silver plating.
What is the molar solubility of CaF2 in 0.10 M NaF solution at 25°C? The Ksp for CaF2 is 1.5x10^-10.
Determine the mass of AgNO3 (MW = 170g/mol) required to dissolve in 400 mL solution in order to prepare a solution which is .14 M AgNO3.
large volumes of gases are released.if 100g of TNT were detonated, what would the mass of each product be? is the law of conservation of mass obeyed? 2C7H5(NO2)3--> 12CO(g)+2C(s)+5H2(g)+3N2(g)
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