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(a)how do I calculate the concentration of the lycopene solution in the spectrophotometer cell before isomerization, given that the molar absorptivity of lycopene at 471 nm is 1.86 x 10^4. (b) Calculate the mass of lycopene in 3.0mL of the solution that has the concentration you calculated in (a).
Write a balanced equation for the reaction that occurs in each of the following cases: (a) Cesium is added to water. (b) Strontium is added to water.
In one city, a balloon with a volume of 6.0 L is filled with air at 101 kPa pressure. The balloon in then taken to a second city at a much higher altitude
Consider a process carried out on 1.00 mol of a monatomic ideal gas by the following pathway from state A to state B
we are doing an analysis of cola lab in my chem I lab. We have to do pre-lab questions and one of them is- how will you use compounds of different colors to determine the relationship between percet transmittance and wavelength? or between absorba..
Calculate concentrations of OH- and the pH of each basic solution. Since NaOH donates on OH- ion for each NaOH molecule, the OH- concentration is equivalent to the NaOH molarity. The pOH is calculated as -log[OH-] and the pH is calculated as 14-pO..
What masses of iron(III)oxide and aluminium must be used to produce 15.0g iron? What is the maximum mass of aluminium oxide that could be produced?
What is the approximate Na+ ion concentration in a 0.75 M Na2CO3 solution? a. 0.375 M b. 0.75 M
What concentrations of [K2HPO4] and [KH2PO4] will you need to make the total concentration 0.50 M? 3.) How many moles of K2HPO4 and KH2PO4 will you need? 4.) What mass of K2HPO4 and KH2PO4 will you need?
Inversion of Configuration and Determination of R/S. Draw a compound with an asymmetric center. Rotate so that you can determine whether it is R or S. Invert the stereochemistry
The peptide Special-K forms an ?-helix that is broken at high temperatures. The fraction of peptide in the ?-helical form (fraction = moles a-helical peptide/total moles of peptide)
The most common source of copper is the mineral chalcopyrite. How many kilograms of chalcopyrite must be mined to obtain 320. of pure copper?
Calculate the minimum energy a photon must have to produce an electron hole pair in an extrinsic semiconductor of band gap 1.0 electron volts.
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