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Explain a wavelength of 925.4 nm has been detected from the emission of a hydrogen gas tube while under excitation from a high voltage source in a lab. This was caused by an electron dropping from a higher voltage source. This was caused by an electron dropping from a higher energy level to the N= 3 level. Find out the energy level number of the higher level
1. 112.153.54.95.17
a sample of water is examined to have two metals with mcl cd2 and al3. this water can treat with oh and the equilibrium
What volume of a 0.500 M hydrochloric acid solution is needed to neutralize each of the following, respectively: a) 10.00 mL 0.300 M sodium hydroxide ; b) 10.00 mL 0.200 M barium hydroxide
Al(OH)3 + 3HCl ---> AlCl3 + 3H2O Determine the moles of acid neutralized if a tablet contains 0.200 mol Al(OH)3
The pKa values of a compound with two ionizable groups are pKa1 = 4.10 and pKa2 between 7 and 10. A biochemist has 10 mL of a 1.0 M solution of this compoud at a pH of 8.00. She adds 10.0 mL of 1.00 M HCl,
Use the Ideal Gas Law in the form n=PV/RT. Remember to change all units to correspon to the values for the gas constant. R=0.0821 L*atm/mol*K.
While preparing oxalate buffer, technicican by mistake added 0.1 M of CaC2O4. (pKsp = 7.9) to 0.2 M solution of oxalic acid(pKa's 1.25; 4.26).
What would happen to the calcium ion concentration in a saturated solution of Ca(OH)2 if the hydroxide ion concentration is increased by dissolving solid NaOH. What is the name of this effect
when 1-bromo-2-methylhexane undergoes solvoysis in methanol, four major products are formed.
A chemist is commissioned to produce 50,000 liters of 0.550 M aqueous phosphoric acid. The chemist can purchase solid, 98.64% pure, phosphoric acid to dissolve in water. How many grams of this reagent are required?
How much water would I need to add to 500mL of 2.4 M KCl solution to make a 1.0 M solution?
Describe a controlled experiment to investigate the effect that the amoun tof salt has on the corrosion process of a copper penny.
Complete the mechanism for the base-catalyzed racemization of the chiral ketone below by adding any missing atoms
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