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When would you do a hot filtration? Why do you wash your crystals after you collect them by filtration?
A 28.7 g sample of ethylene glycol, a car radiator coolant, loses 652 J of heat. What was the initial temperature of ethylene glycol if the final temperature is 32.5°C (c of ethylene glycol = 2.42 J/gK)
select the element potassium k. give the wavelength in aringngstroumlms the frequency and the energy of the broadest
Nicotine is a poisonous, addictive compound found in tobacco. A sample of nicotine contains 6.16 mmol C, 8.56 mmol H, and 1.23 mmol N ( mmol = millimol = 10-3 mol).
What is the theoretical yield of bromobenzene in this reaction when 30.0 g of benzene reacts with 65.0 g of bromine?
Beginning with 150.0 mL of 0.175 M ammonia, determine the solution's pH after an additional 25.0 mL of 0.400 M ammonium chloride is added to the solution be sure to account for the change in volume at each step.
What is the balanced equation for the formation of magnesium nitride from magnesium and nitrogen gas
state the arrhenius bronsted-lowry and lewis definitions of acids and bases. given an acid-base reaction equation pick
Calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.
The initial volume of the balloon is 5.00 , and the pressure is 760. The balloon ascends to an altitude of 20, where the pressure is 76.0 and the temperature is 50. What is the new volume, of the balloon in liters, assuming it doesn't break or leak
For each of the following equations, indicate the rate of change of all the other species relative to the rate of change of the underlined species
if 16.87 grams of nitric acid are reacted with a large amount of aluminum metal what volume of hydrogen gas would be
How much salicylic acid is required to produce 1.1 x 102 kg of aspirin assuming that all of the salicylic acid is converted to aspirin
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