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How do the colors seen by the naked eye compare to the emission spectra emitted by the flame
the heat of fusion of a compound is 126 joules per gram. What is the total number of joules of heat that must be absorbed by 15.0- grams sample to change he compound from solid to liquid at its melting point?
A group of college students eager to get to Florida on a spring break drove the 630 mi trip with only minimum stops. They computed their average speed for the trip to be 55.3 mi/h. How many hours did the trip take?
Which solution has the lower freezing point a) 5 g of ch3oh in 250 g of water or b) 10 g of ch3ch2oh in 500 g water. Explain why
A beaker contains 203 mL of a 6.67 M HCl(aq) solution. Determine the new concentration of the solution after it is diluted by adding 159 mL of water.
A lab protocol on synthesizing sulfathiazole from p-acetamidobenzenesulfonyl chloride and 2-aminothiazole. It would be appreciated if exact amounts of reagents, solvents, etc (in grams, mmols, mls - etc), could be given.
draw the complete structure of lysine, including the site of ionization, in: strongly acidic solution, neutral solution, strongly basic solution.
A 0.9092-g sample of wheat flour was analyzed by the Kjeldahl procedure. The ammonia formed was distilled into 50.00mL of 0.05063 M HCl; a 7.46-mL back-titration with 0.04917 M NaOH was required. Calculate the percentage of protein in the flour.
Question- A simple way of raising pH in waste streams is to bubble ammonia gas through the solution. Calculate the TOT NH3 of a solution at pH of 7.9 that has been equilibrated with gas having a partial pressure of NH3(g) in air of 10-2.
One mole of an ideal gas (Cv=3/2R) is heated at (a)constant pressure and (b) constant volume from 298Kto 353K. Calculate delta_S for both cases.
Titration of a 10.0mL solution of KOH requires 22.0mL of 0.0310M H2SO4 solution. What is the molarity of the KOH solution
Write balanced net ionic equation for the reaction between hydrobromic acid and potassium hydroxide.
1-A 500 mL NaCl solution is diluted to a volume of 1.24 L and a concentration of 8.00 M. What was the initial concentration C1? 2- write the total ionic equation.Be sure to include the charges on the ionic species and the physical state of all the..
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