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As part of a laser light show, a technician is adjusting a diffraction grating. A green laser with a wavelength of 532 nm is shone on a diffraction grating with 2700 lines/cm. The screen is 35.0 m from the diffraction grating. What is the distance between the slits of the diffraction grating? How far from the central maximum is the bright fringe?
Decide whether aqueous solutions of the salts a-h are acidic / basic / or neutral. For each ion that hydrolyzes write the hydrolysis equation. acidic/basic/neutral and hydrolysis equation
What chemical substances compose the plasma membrane?
What is the pH of a buffer solution prepared from 5.15g of NH4NO3 and 0.10L of 0.15M NH3? What is the new pH if the solution is diluted with pure water to a volume of 500mL
Palmitic acid C_16 H_32 O_2 is a dietary fat found in beef and butter. The caloric content of palmitic acid is typical of fats in general. 1. What is the caloric content of sucrose in Cal/g? Delta Hrxn is: -5640 kJ
Explain a volume of 18.0 L contains a mixture of 0.250 mole N2, 0.250 mole O2, as well as an unknown quantity of He. The temperature of the mixture is 0 Celsius, as well as the total pressure is 1.00 atm. Explain how many grams of helium are prese..
L.X., a classmate, started the titration but forgot to add phenolphthalein indicator to the solution of unknown acid at the start. On adding three drops.
write a balanced chemical equation for the reaction that occures in the experiment (B) Give the net ionic equation for this reaction
If 45.2 mL of 0.116 M HCl solution is needed to neutralize a solution of KOH, how many grams of KOH must be present in the solution
Close the side neck of the flask with a rubber pipette bulb (or vacuum line in case of high mp substances), and then place ice water in the centrifuge tube.
Balance the equation for the following reaction in a basic solution. Give balanced equations for both half-reactions and balanced equation for the overall reaction.
the decomposition of hypothetical compound X from part A is 1.60 M -1 * min -1, calculate the concentration of X after 16.0 min. Initial concentration is o.467
One is a metalloid; the other is a metal. Both form oxides of the formula RO2. the first is acidic; the next is amphoteric. Identify the two elements and explain your reasoning.
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