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a sample of ammonia gas at 1.2 atm compressess from 500 ml to 250 ml. if the temerature remains constant, what is the new pressure of the gas? what formulas were used?
You have successfully purified a protein to homogeneity. From gel permeation chromatography studies, you determine that the protein has a molecular weight for 235,000 daltons.
Phosphorus, P, is combined with flourine F2, to give a gaseous compound with the formula PFx. If you start with 2.982 grams of P and isolate 12.129 grams of PFx, what is the value of x?
what are the concentrations of each component If a 10.00L vessel has 2.50 mol CO 2 and H 2 O, and 5.00 mol CO 2 and H 2 gas at 588°K, (Kc = 31.4 at 588°K), at equilibrium?
a perfect gas undergoes isothermal compression which reduces its volume by 2.20 L. the final pressure and volume of the gas are 3.78x10^3 torr and 4.65 L, respectively
A piece of metal of mass 18 g at 117 C is placed in a calorimeter containing 48.2 g ofwater at 21C. The final temperature of the mixture is 85.4C.
Calculate How many mL of the HCl solution was required for the titration.
what is the volume percent of a solution prepared by dissolving 43 g of NaOH in enough water to make a final volume of 120 ml.
If 6.46 L of gaseous ethanol reacts with 16.1 L O2, what is the maximum volume of gaseous carbon dioxde produced
A cool solution of sodium nitrite and a solution of the amine in an ice bath. Moderately concentrated hydrochloric acid is added.
A 0.456 gram sample of an unknown monoprotic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
explain Why this separation occur and which solvent will be on top - the temperature of twenty degree Celsius. When hexane is added with H 2 O, there is a separation
Compare a refrigerator set at four degree celcius and a freezer set at minus twenty degree celsius, both of which are operating in the room at the temperature of eighteen degree celsius.
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