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A grating has 8,000 slits ruled along a length of material of 4 cm. Explain what is the wavelength and approximate color of the light whose 5th order maximum diffracts at an angle of 45 degrees from the grating normal?
After you have added 1 N HCl to adjust the pH of the Tris solution to 8.1, what is the ratio (in mmols) of Tris to Tris-HCl in the resulting buffer solution
The density of liquid mercury is 13.6g/mL at 25 celsius. What is the density in g/cm3?
Explain how a nuclear fission reaction can be controlled to produce heat for power generation, ratherthan an explostion
A sample of gas with an initial volume of 27.6L at a pressure of 735 mmHg and a temperature of 309 K is compressed to a volume of 15.8 L and warmed to a temperature of 374 K.
Explain your answer. Could you still identify what those amino acids were? Explain your answer. What can you not do?
A stock solution is prepared by adding 23 mL of 1.6 M Pb(ClO3)2 to enough water to make 50 mL. How many moles of ClO3- are in 24 mL of the stock solution?
500 ml of a gas is collected under the following conditions pressure 750 torr and temperture 24 degree celsius. what
Explain what is 10.11 grams of calcium carbonate decomposes by heat to8.51 grams of calcium oxide as well as carbon dioxide gas, explain what mass of ammonia reacted and what would the balanced chemical equation be written like
What partial pressure of dinitrogen monoxide gas is required in order for 0.00280 g of the gas to dissolve in 11.4 mL of pure water. The Henry's Law constant for dinitrogen monoxide gas is 2.4 x 10-2 M atm-1.
A student prepeares a cold pack by dissolving 30 grams of ammonium nitrate in 100 g of water at 20 degrees celcius to 0 degrees celcius, what is the calculated experimental value for ΔH per mole of ammonium nitrate
How many grams of dry NH_4Cl need to be added to 2.10 L of a 0.100 it M solution of ammonia, NH_3, to prepare a buffer solution that has a pH of 8.84? K_b for ammonia is 1.8 * 10^{-5}
During a quirky promotion by a discount sporting goods store, golf balls were given away free when purchasing Ping-Pong balls in bulk. An equal mass of golf balls was given away based on the mass of ping
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