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The experimentally determined freezing point of 1.00% solution (mass%) of nitric acid (HNO3) is -0.56 0C. Calculate the molality of the solution, determine the calculated freezing points, and then calculate the values of the van't Hoff factor i. Kfp(H2O)=-1.86 0C/m.
in europe gasoline efficiency is measured in kml . if your cars gas mileage is 30.0 milesgal how many liters of
A flask contains 0.500molmol of liquid bromine, Br2\rm Br_2. Determine the number of bromine molecules present in the flask.
find the of X-281, you prepare a 0.075 test solution of X-281. The pH of the solution is determined to be 3.00. What is the of X-281?
A lab procedure requires 35.0 mL of a liquid. Which of the following glassware should be used to obtain the volume with the greatest number of significant figures: 50mL beaker, 100mL erlenmeyer flask, 250mL graduated cylinder, 50mL graduated cylin..
if 60 ml of a 1.6 m nacl solution is evaporated to dryness how many grams of salt will remain? a solution is prepared
What is the percent yield for iron if the reaction of 65.0 of iron(III) oxide produces 45.0 of iron if Iron(III) oxide reacts with carbon monoxide to produce iron and carbon dioxide.?
A certain reaction has an activation energy of 27.03 kJ/mol. At what Kelvin temperature will the reaction proceed 3.00 times faster
What problem will ensue if the level of the developing liquid is higher than the applied spot in a TLC analysis
A 0.4243-g sample of CaCO 3 is dissolved in 12 M HCl and the resulting solution is diluted to 250.0 mL in a volumetric flask. How many moles of CaCO 3 are used (formula mass = 1 00.1 )
What is the principal product when aniline is treated with sodium nitrite and hydrochloric acid at 0-5°C and this mixture is added to p-ethylphenol.
How many grams of KCOOH are needed to prepare 150 ml a buffered solution of pH 3.85 if the acid concentration, HCOOH is 0.1M
The Bracket series of emission lines falls in the infrared region of the em spectrum, and each line is a result of an electron falling from a higher Bohr orbit to the n=4 level.
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