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Calibration plots for analytes A and B yield in a different slopes (a and v accordingly). Slope a is grather than b. What can you conclude regarding the sensitivity of used analytical method for components A and B?
Use Henderson-Hassalbach equation. The pKa of Tris-HCl is 8.1. After you have added 1 N HCl to adjust the pH of the Tris solution to 8.1, what is the ratio (in mmols) of Tris to Tris-HCl in the resulting buffer solution?
A metal rod has a mass of 17.62 g. A graduated cylinder contains 28.9 mL of water. The metal rod is added to the cylinder. The final water level is 35.1 mL. What is the density of the metal rod?
A 25.00 mL sample of a sodium hypoclorite liquid bleach is placed in a 250 mL volumetric flask and diluted to the mark. A 25.00 mL aliquot of this solution is placed in a 250 mL Erlenmeyer flask.
When 2.8>g of NaOH were dissolved in 53.8>g of water in a calorimeter at 24.4oC, the temperature of the solution went up to 38.6oC. Find the value of delta H for one mole of NaOH.
what is the difference between a metal in its elemental state and a metal ion? what are the different chemical and
A chemical reaction is found to have an activation energy (Ea = 15 kJ/mol). At a temperature of 505 K, what fraction of collisions have enough energy to exceed the activation energy
Consider the compound (Z)-3-hexene (B). Draw the bondline structures of the isomers of this compound in the manner requested. i) an isomer E that is the most reactive or reacts at the fastest rate during an addition reaction.
I combust 22 g of propane (C3H8) in the presence of 96 g of oxygen in a strong, sealed, 100 liter ridgid container. What is the total pressure in the container if, after combustion, the temperature is 400 K
a stream of toluene at 500degc and 2 bar flowing at 40 kmolh is cooled to 200degc and 1 bar pressure in a heat
A student analyzed an antacid tablet from a bottle containing 120 tablets purchased for $2.79. The mass of the tablet was 1.247 grams. What is the cost of one antacid tablet in cents/tablet.
A flask contains both A and B. Both decompose following first-order kinetics with half-lives of 50 and 18 minutes, for A and B respectively. If the concentrations of A and B are initially the same, how long will it take for the concentration of A ..
What is the energy of a single UV photon and mole of UV photons having a wavelength of 25 nm
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