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(a) the equation of line determined from a beer's law plot is y=0.195x+0.4. what is the resistance of an unknown water sample if the assumed concentration is 1.8ppm? choices are (a)850ohm (b)751ohm (c)400ohm (d)504ohm (e)1000ohm. show work on how you arrived to that answer please
(b) the equation of line determined from a beer's law plot is y=0.195x+0.4. what is the resistance of an unknown water sample if the assumed concentration is 650ohms. the choices are (A)0.20 (b)0.4 (c)1.3 (d)3.3x10^3, again please show wor so that your answer will be chosen as the best of all.
The research on diversification in portfolio management indicates that the best approach is probably
Show that the van der Waals and Redlich-Kwong equations of state reduce to the ideal gas equation of state in the limit
What would you have to do to increase Internet access? List the steps you would have to take or who you would have to contact to have this change take place in the classrooms at your school.
What is the orbital period of Jupiter’s moon, Europa, in units of years? What is the semi-major axis of Europa, in units of AU? What is the orbital period of Callisto, in units of years?
Which one of the following compounds is not consistent with the terminology of a complex? A) [Cu(NH3)4]2+ B) D) [Cr(NH3)6]Cl3
Find data on GDP and its components, and compute the percentage of GDP for the following components for 1950, 1980, and the most recent year available. Do you see any stable relationships in the data Do you see any trends a. Personal consumption ex..
What combination of a molecular base and a salt of the conjugate acid of the chosen molecular base should you select to prepare a buffer solution that would maintain a pH of 10.00?
A major automotive company is considering an agreement with a small manufacturer whereby it would be required to make end-of-the-year royalty payments of $500 000 beginning in year 4 and ending in year 8 (five years in total).
Calculate the pH of a buffer solution composed of 0.10 M butyric acid (CH3(CH2)2COOH, Ka = 1.5 x 1-^-5) and 0.20 M sodium butyrate, (NaCH3(CH2)2COO).
Assume two countries: the U.S. and Japan. Show, using demand and supply, how the $/¥ exchange rate is determined. Why do Japanese people want to sell Yen Why do Americans want to buy Yen
Which of the following is not the correct chemical formula for the compound named?
Draw all possible isomers for the molecule having the formula C7H7C1. The molecule contains one benzene ring.
X reacts with one molar equivalent of hydrogen in the presence of a palladium catalyst to form 1,2-dimethylcyclopentane. Treatment of X with ozone follwed by zinc in aqueous acid gives a dialdehyde.
Why does sulfuric acid protonate the nitrogen atom of the diethylamine group of lidocaine preferentially to that of the amido group
which of the following transition metal complexes is diamagnetic?
Determine the numbers of moles of S8 that are required to make 0.600 moles of SF4.
A certain compound is made up of three chlorine atoms, one phosphorus atom, and one oxygen atom.
What is the latent heat of vaporization Tsat in kJ/mol? (Answers are 1366 kW and 28.4 kJ/mol) Please show work for good rating.
A solution is made by mixing 42.0 mL of ethanol, C2H6O, and 58.0 mL of water. Assuming ideal behavior, what is the vapor pressure
The solution density if 1.001g/mL. Calculate the Ca2+ and Mg2+, molarity, molality, mol fraction, and the PPM. Please show examples.
Red phosphorus is fairly stable, while white phosphorus will ignite spontaneously in air above 50 C. Determine the change in entropy for the conversion of the white form to the red form
Suppose that ammonia (a monoprotic base), applied to a field as a fertilizer, is washed into a farm pond containing 3.0 × 106 L of water. If the pH of this pond is found to be 9.81.
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