Reference no: EM13126113
How many millitres of 0.480M NaOH would be required to titrate a 5.00ml solution of 0.320M H2SO4? Report answer to the correct number of significant figures.
1) How many millitres of 0.480M NaOH would be required to titrate a 5.00ml solution of 0.320M H2SO4? Report answer to the correct number of significant figures.
2) Write a balanced equation for the combustion of octane, C8H18.
3) If the standard enthalpy of formation (ΔHf) of methanol, CH3OH, is
-238.6kJ/mol, ΔHf(CO2(g))= -394kj/mol, and ΔHf(H20(l))= -286kJ/mol, calculate the standard heat of combustion of methanol.
Report the answer to the correct number of significant figures.
4) If a gas sample absorbs 89kJ of heat and does 120 kJ of work, what is the change in itd internal energey? Report your answsers to the correct number of significant figures.
5) What is the wavelength of a photon of electromagnetic radiation having a photon energy of 4.56X10^-19 J? Report your answer in nanometers, to the correct number of significant figures.
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What is the confidence interval for the population mean
: The sample standard deviation was 1.1 years. Using the 0.99 degree of confidence, what is the confidence interval for the population mean?
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Predict job performance rating for employee
: Ffor ten randomly selected employees of a company is = 117 - 1.02x. Predict the job performance rating for an employee whose attitude rating is 55.
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Find calculated surface concentration of so2
: Explain qualitatively how the following would change the calculated surface concentration of SO2 assuming a gaussian plume from a smoke stack that follows the gaussian equation for the concentration of SO2
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Subsets in set formula
: Pasta comes with tomato sauce and can be ordered with some , all, or none of these ingredients in the sauce: {onions, garlic, carrots, broccoli,shrimp, mushrooms, zucchini, green pepper}.
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What is the wavelength of a photon of electromagnetic
: What is the wavelength of a photon of electromagnetic radiation having a photon energy of 4.56X10^-19 J? Report your answer in nanometers, to the correct number of significant figures.
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Method to determine depreciation
: Canliss Mining uses the retirement method to determine depreciation on its office equipment. During 2009, its first year of operations, office equipment was purchased at a cost of $14,000.
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What is the probability that both voters are republicans
: Iif two voters are randomly selected for a telephone survey, what is the probability that they are both Republicans? Round your answer to 4 decimal places.
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Fundamental counting principle-automobile models
: An automobile manufacturer produces 7 models, each available in 6 different exterior colors, with 4 different upholstery fabrics and 5 interior colors. How many varieties of automobiles are available?
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Find probability there are exactly nine days
: Find the probability that in a given month a) there are exactly 9 days with 0.01 inch or more precipitation, b) there are at most 9 days.
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