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A 100ml sample of sodium bromide containde co104.62g of sodium bromide. upon evaporation, 6.280g of reside was obtained. frome this data calculate each of the folowing for the solution;
a density of the solution
b percent by mass of sodium bromide in the solution concentration of sodium bromide in grams per 100ml of water.
c grams of sodium bromide per liter of solution
d molarity of the solution
The simplest carbene known is methylene. The non-bonded electrons can be paired (singlet methylene) or unpaired (triplet methylene).
The standard deviation of the analytical method was determined to be +/-2.3%. What is the standard deviation overall? And in order to reduce the overall standard deviation to +/- 5.0%
An intermediate in a chemical reaction is a species that the reactant molecules interact with during an early step in a reaction that is regenerated
equilibrium constant, Kp, for the reaction = 0.295 (at 400 degrees C.)then write the kp of the reaction and Calculate kc at 400 degree Celsius.
calculate the solubility of silver sulfate in water at 25 degree celcius, express answer in molarity; and how would the solubility of silver sulfate change
A sample of N2 gas occupies 2.40L at 20 degress cecius. if the gas is in a container that can contract or expand at constant pressue, at what temperature will the N2 occupy 4.80 L?
You are given the chemical reaction (unbalanced equation): AsF3 + C2Cl6 AsCl3 + C2Cl2F4, if 1.3618 mol of AsF3 are allowed to react with 1.000 mol of C2Cl6, what would be the theoretical yield of C2Cl2F4, in grams?
What is the free-energy cost of pumping Ca2+ out of a cell when the cytoplasmic concentration is 0.4 micromolar, and the extracellular concentration is 1.5 micromolar
Calculate the molarity of a solution made by dissolving 0.150 mol Na2SO4 in enough water to form exactly 760 mL of solution.
Draw all the stereoisomers of 3-chloro-2-butanol. Indicate which isomers are enantiomers, which are diasteromers,
What is the concentration of unknown acid solution? Write the neutralization reaction, balance it, name the products THEN Solve the problem above.
you reacted 11.5 grams of sodium sulfate and 55.0 ml of 0.500 M barium nitrate, how many grams of barium sulfate are made.
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