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Two methods were utilized to measure the fluorescence lifetime of a dye. Are the standard deviations considerably different? Are the means appreciably different?Quantity Method 1 Method 2Mean lifetime (ns) 1.382 1.346Standard deviation (ns) 0.025 0.039Number of measurements 4 4
Discuss the difference between Mass Spectroscopy, Nuclear Magnetic Resonance,
A solar panel is used to heat water in a tank. How much heat energy is needed to raise the temperature of 1000 L of water from an initial temp of 23 degrees Celsius to a final temp of 65 degrees Celsius
Thermochemistry and Periodic Properties of Elements. State which atom is larger according to periodic trends. Explain the difference for each of the pairs.
Explain what would be the product of a grinard reagent with an acid chloride such as acetly chloride. Explain how many moles of the grinard would react per mol of acid halide.
Calculate the number of moles of KHP? b. How many moles of NaOH will react with the KHP dissolved in water? c. Calculate the Molarity of the NaOH solution?
How many grams of Cuso4 are needed to prepare a .150 molal solution in 300 grams of water?
One component of wet rust is Fe(OH)2' How many grams of oxygen, O2, are in 1 kg of Fe(OH)2
Formic acid, HFor, has a Ka value equal to about 1.8x10-4. A student is asked to prepare a buffer having a pH of 3.40 from a .10M HFor and a .10M NaFor solution. How many milliliters of the NaFor solution should she add to 20mL of the .10M HFor to..
If 6.46 L of gaseous ethanol reacts with 16.1 L O2, what is the maximum volume of gaseous carbon dioxde produced
At 298 K, the standard enthalpies of formation for C2H2(g) and C6H6(l) are 227 kJ/mol and 49 kJ/mol, respectively. (a) Calculate ?H° for the following reaction. C6H6(l) 3 C2H2(g)
During the isomerization of trans-1,2-dibenzoylethylene C16H12O2 using 95% Ethanol C2H6O , and UV light irradiation. What is the overall equation for this reaction. What is the product.
Calculate the pH when 2.00 mL of 0.0275 M NaOH are added to 50.0 mL of buffer solution.
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