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MW(KNO3) = 101.11 g/mol, MW (K) = 39.1 g/mol Using ppm in a calculation Calculate the concentration of Na+in ppm, resent in a solution prepared by ; dissolving 1.002 g of pure NaBr and diluting to a volume of one liter. calculate the molarity of Na+as well. NaBr = 23.0 g/mol + 79.9 g/mol = 102.9 g/mol
use the concept of electron configurations to explain why the number of alence electrons in metals tends to be less then the number in most nonmetals.
If 5.00 mL of HCl require 4.73 mL of 0.9581 M NaOH to just consume the HCl, what is the concentration of the HCl.
A certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. The volume of the oxygen sample collected was 870 mL at 40C and a barometric pressure of 755 torr.
Write an academic essay where you show a clear relationship between cause and effect, with a topic chosen from your major field of study, your work life, or your personal life. Here are some examples of topics from your textbook and from successfu..
when carbon is burned in the presence of oxygen, the carbon and oxygen combine to produce carbon dioxide. if you start with 3 grams of carbon and 8 grams of oxygen and they react completely, how many grams of carbon dioxide will be produced?
Calculate the pH of a solution prepared by dissolving 0.30 g of BaO in enough water to make 0.800 L of solution.
draw the skeletal structure of the organic species containing the carbonyl functionality needed to form
A sample of commercial concentrated hydrochloric acid is 11.8M HCl and has a density of 1.190 g/mL. Calculate the mass % , molality and mole fraction of HCl.
Determine the equivalent acid-base equilibrium that results when each of the following pairs of solutions is mixed. 25.0 mL of 0.50 M NaOH + 12.0 mL of 1.50 M HCl Pick two initial conditions from first four choices. Pick one choice from remaining ..
How many grams of formic acid, HCOOH, must be added to 0.240 L of 0.110 M sodium formate, HCOONa, to yield a buffer solution with a pH of 3.50. Assume no volume change. Ka of HCOOH = 5.0 10-4
The Vehicle Assembly Building at the Kennedy Space Center in Florida has a volume of 3,666,500 m^3. Convert this volume to liters and express the result in standard exponential notation.
1. The acid hydolysis of a small peptide was found to be Tyr, Phe, Asp,Gly,Lys,Val and Ala. 2. The original peptide when treated with trypsin produced two pepetides
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