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Explain what is the frequency of photons emitted by hydrogen atoms as they undergo transitions from n=5 to n=3? If the concentration on the STOCK KMn04 solution is 0.200M, how much of it do you need to make a 250ml diluted solution of 0.0200M?
If 32.0 g CaC2 are consumed in this reaction, how many moles of H2O are needed?
Calculate the pH of a solution made by adding 24 g of sodium acetate, NaCH3COO, to 26 g of acetic acid, CH3COOH, and dissolving in water to make 200. mL of solution.
The principal quantum number, n, describes the energy level of a particular orbital as a function of the distance from the center of the nucleus. Additional quantum numbers exist to quantify the other characteristics of the electron.
define in one or two sentences the following terms indicate one step in glycolysis in which they are significant.a
Predict if the following conditions would result in the formation of a precipitate, explain briefly: a) 0.0025 M Fe 3+ at pH 6.00
volume of 2.24 L at 288 K and 1.05 atm. Calculate the pressure when the volume is 1.19 L and the temperature is 303 K.
The dimerization of Nitrogen Dioxide has a rate constant of 2.45 x 10-2 L/mol min at 25 °C. What will be the concentration of NO2 after 2 minutes? given a starting concentration of NO2 = 11.5 mol/L
what is the radius of the cross section of a cylinder that has a volume of 644.0 m3 and a height of 12.6 m?
a carnot cycle uses 1.00 mol of a monatomic perfect gas as the working substance from an initial state of 10.0 atm and
The student uses 19.5 mL of 0.535 M NaOH to titrate the solution. Calculate the moles of acid neutralized per grams of tablet.
Two substances, A and B, initially at different temperatures, come into contact and reach thermal equilibrium. The mass of substance A is 6.05g and its initial temperature is 20.9?C
n KPH= mass KPH * 1 mol KHP/ MM KHP. for trial 1 my mass of KHP was 2.98 s. How do I calculate this with out knowing what MM KHP stands for
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