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What is the osmolarity of a solution containing 0.1 M NaNO3 and 0.2 M NaCl? What is the molarity of the solution prepared by diluting 49.5 mL of 2.09 M AgNO3 to the final volume 82.6 mL? Calculate your final answer to 2 decimal places.
in the preparation of the esters given in this experiment the reaction product was extracted with 5 sodium bicarbonate
suppose a 5.00 l sample of o2 at a given temperature and pressure contains 2.73 times 1023 molecules. how many
suppose you have 10 ml of 0.10m sucrose solution. you add 90 ml of water to the solution. do the number of sucrose
Calculate the average molecular weight of a gaseous mixture with the following composition on a mole % basis: CH4= 30%, H2= 10% and N2= 60%.
400 ml of .50 M HNO3 is added to 200 ml of water. if 100% dissociation occurs, find the resulting pH.
Estimate the Debye Temperature of gold form the following information. For gold, the atomic weight is 197, the density is 19000 kg/m^3 and the velocity of sound is 2100m/s.
A 50.0 mL sample containing Cd2 and Mn2 was treated with 69.6 mL of 0.0600 M EDTA. Titration of the excess unreacted EDTA required 11.9 mL of 0.0220 M Ca2
Air is about 78.% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules.
Fuel cells combine H2(g) and O2(g) to produce H2O(g). What is the crossover temperature for this reaction at standard state
Quinine emits fluorescence at the wavelength of 347 nm. An unknown quinine solution gave fluorescence reading of 400 (after background subtraction) at the 347nm.
Use the octet rule to predict the formula of the compound that would form between tellurium and iodine, if the molecule contains only one tellurium atom and only single bonds are formed.
if the freezing point of a 0.106m CH3COOH solution is -0.323 degrees celcius, what is the percent of acid that has undergone ionization?
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