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I got the following absorbance for 3 unknown protein samples: -0.019, 0.019, -0.22 and I need to calculate their concentration. The equation for the line in the graph is y= .83x + 0.1226. I do not know if I use this equation or the beer's law ( I do not know how to use the beer's law ) or the equation of the line to calculate concentration. Also I am not the negative values are right and how I calculate them. Your help is appreciated.
Calculate the number of grams of aluminum required to prepare 500.0g of chromium metal.
What is the approximate value of the equilibrium constant, Kn, for the neutralization of hydrochloric acid with sodium hydroxide, shown in the equation below? HCL(aq) + NaOH(aq) --> H2O (l) + NaCl (aq)
Why would it be more appropriate to put the elements La and Ac in the bottom two periods and put Lu and Lr in the transition metals? Why don't we see the use of any sublevels higher than the f sublevel?
How many moles of table salt (NaCl) are in a box that has 117 grams of salt? (atomic mass of Na = 23.0; atomic mass of Cl = 35.4)
Which of the following statements are evidence that gases do not always behave ideally? Check all that apply. When two gases are mixed, they follow Dalton\'s law of partial pressures.
Calculate the work associated with the compression of a gas from 121.0L to 80.0 L at constant pressure of 20.7 atm.
A reaction inside a cylindrical container with a movable piston causes the volume to change from 14.0L to 21.0L while the pressure outside the container remains constant at 0.975 atm.
Describe three ways to could make and acetic acid/acetate buffer with acetic acid, sodium acetate, deionized water, a solution of hydrochloric acid and a solution of sodium hydroxide.
Which of the following solutes in aqueous solution would be expected to exhibit the largest freezing-point lowering (assuming ideal behavior)
The compound MgI2 times XH2O is analyzed to determine the value of X. A 1.557-g sample of the compound is heated to remove all the water, 1.0254 g of MgI2 remains
6HF + SiO2 => H2SiF6 + 2H2O Delta Hrxn = -670kJ/mol, What is the enthalpy change if the feed into a reactor contains 3 mol HF and 1.5 mol SiO2
4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 How many moles of O2 will be produced if 5.17 moles of CO2 react completely?
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