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A biochemist is thrilled with her discovery of a new enzyme. In order to characterize this new enzyme, she uses osmotic pressure. A solution containing 0.190 g. of this enzyme in 187. mL of solution has an osmotic pressure at 298 K. of 1.18 torr. What is the molar mass of this new enzyme? Error duplicate problem...not on test...remember to convert torr to atm and mL to L. Be able to solve for MM from fp depression or bp elevation data
Compute the pH of a solution formed by adding 14.1 g of baking soda (sodium bicarbonate) to enough water to make a 190.0 mL solution
Bleach is a dilute solution of NaOCl in water. The density of bleach is 1.05g/ml. If the percent by mass of NaOCl is 6% what is the [NaOCl]
a 1.00 g sample of enriched water a mixture of h2o and d2o reacted completely with cl2 to give a mixture of hcl and
An electron in a hydrogen atom relaxes to the n = 4 level, emitting light of 114 THz. What is the value of n for the level in which the electron originated
if 1.500 g of solute that has a molar mass of 125.0 g were dissolved in 35.00 g of camphor what would be the resulting
Compare this energy ( 23 Joules) to the amount of energy absorbed by a person's body if they jumped from a chair to the floor (assume that all of the energy from the fall is absorbed by the person and h=0.5 m).
Autoclave that are used to sterilize surgical tools require a tempereature of 120 degree to kill bacteria. At what presure must they operate?
Calculate the molar mass of a vapor that has a density of 6.735 g/L at 13°C and 825 torr.
A 15.6 mL sample of vinegar, containing acetic acid, HC2H3O2, was titrated using 0.6216 M NaOH solution. The titration required 19.80 mL of the base. Assuming the density of the vinegar to be 1.0 g/mL, what was the percent (by mass) of acetic acid..
what wind flow rate entering the canyon would produce a pollutant concentration greater than 0.0025 gmol/ft^3 in the air coming out of the canyon?
peroxyacetyl nitrate is an air pollutant produced in photochemical smog by the reaction of hydrocarbons oxides of
you have a hydrochloric acidsolution with a pH of 1.8. How many mL of sodium hydroxide with a pH of 11.8 would be used to neutralize 20.0 mL of the acid solution.
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