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If the wavelength of the emission maximum from a small pinhole in an electrically heated container was determined at a series of temperatures as well as the results are given below. Deduce a value for Planck's constant.θ/degrees C 1000 1500 2000 2500 3000 3500λmax/nm 2181 1600 1240 1035 878 763
A 10.00 ml aliquot was then diluted to 50.00 ml with distilled water and passed through a strong-acid ion-exchange resin. The eluate and washings required 36.54 ml of the NaOH solution to reach the same end point. Report the molar concentrations o..
The Heat of vaporization delta Hvap of carbon tetrachloride (CCl4) at 25C is 39.4 kJ/mol. If 1 mol of liquid carbon tetrachloride at 25C has an entropy of 216 J/K, what is the entropy of 1 mol of the vapor in equilibrium with the liquid at this te..
Iodine Trichloride, ICl3, will react with a chloride ion to form ICl4 negative. Identify the Lewis acid and Lewis base. Use arrows to show movement of the electrons in the formation of the product.
How would you use a Grignard reaction of an aldehyde or ketone to synthesize diphenylmethanol? Draw the Grignard reagent and the aldehyde or ketone you would use below.
The standard enthalpy of formation of SiH4(g) is +34.3 kJ. The standard enthalpy of formation reaction is below. Si(s) + 2 H2(g) SiH4(g) What is the enthalpy change for the following reaction?
Using the reduction potentials given, calculate the equilibrium constant,K, at 25 degrees Celsius for the reaction.
You may want to write out the reaction)When ethane (C2H6) reacts with chlorine (Cl2) the product is C2H5Cl and HCl. In a certain experiment 165 g of C2H6 reacts with 255 g of Cl2.
A piston has an external pressure of 13.00 atm. How much work has been done if the cylinder goes from a volume of 0.160 liters to 0.540 liters.
calculate the number of grams of acetic acid per 10ml of the vinegar. Since vinegar has a density of about 1.00 gram/ml, 100 ml eighs about 100 g.
Find the pH and the concentration of each of the species of lysine in a solution of .010M lysine monohydrochloride (lysine-HCl)
the bottom of a box has a surface area of 25.0 cm2. the mass of the box is 34.0 kilograms. acceleration due to gravity
Rank them in order of size from largest to smallest. In this diagram, A and B are different palindrome sequences on a DNA strand. Only the restriction enzyme that recognizes site B is present. Explain why only two fragments would be produced. How ..
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