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If it takes 3.50 minutes for the concentration of the reactant in a first order reaction to drop in concentration from 1.20M to 0.400M, how long will it take for the concentration to drop from 0.400M to 0.200?
describe one or more simple chemical tests that would distinuish acetaminophen from ibuprofem
What is the mass of H2SO4 in 520.0 cm3 sample of sulfuric acid that has a density of 1.55 g/cm3 and which consists of 55.0 % H2SO4
What is the difference between alpha-glucose and beta-glucose? and show the condensation of two glucose molecules to form a disaccharide with an alpha linkage; with a beta linkage.
Ethanol CH3CH2OH(l) can be formed from a reaction between ethylene gas C2H4(g) and water vapor. It is unclear if the C-C in ethylene gas is a single, double, or triple bond.
Assume that the buret represenst H+ ions, the flask represents OH- ions, and you are carrying out a titration of the base with the acid.
of 2.60 cm^2.if solar radition is 1150 W/m^2, how many photons strike the leaf every second.
Calculate the pH of a sodium cyanide solution that is 0.37M NaCN. The Ka for hydrocyanic acid HCN is 4.00E-10.
The 20 mL of water added to the Erlenmeyer flask is to be previously boiled, deionized water. Since water does absorb CO2 from the atmosphere and since CO2 dissolved in water causes it to be slightly acidic,
what is the acid dissociation constant of a weak acid if a concentration of 0.3 M gives a hydrogen ion concentration of 0.001M?
What colligative properties are displayed by these situations.
What is the pH of a 0.16M solution of a lactic acid. HC3H5O3
What is the pH of a buffer prepared by adding 0.809mol of the weak acid HA to 0.305mol of NaA in 2.00L of solution? the dissociation constant Ka of HA is 5.66x10^-7
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