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How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion? Calculate the molarity of the solution.
Give the structure of the phosphorus ylide and carbonyl compound you might use to prepare the following alkenes
Calculating the molecular formula of an organic compound. Worked example, using fundamental formula and balanced equations.
If 95.0 mg of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m.
How many mmoles of mercury are in the sample? B) How many mg's of mercury are in the sample? C)What is the percent mercury (w/w) in the ointment?
A sample of neon has a volume of 470 mL when it is at a pressure of 685 mmHg. What will be the volume when the pressure is increased to 1212 mmHg?
Important information about pH and Molarity, You add 5 drops of .100 M HCl to 100ml of "pure" water. Assuming that the volume of one drop is .035ml, calculate the expected pH of the resulting solution
What is the compounds molar mass if the density of a gaseous compound of phosphorous is 0.943g/L at 474K when its pressure is 728 torr.?
why we call benzene phenyl and not benzyle when one hydrogen is removed because in case of alkanes we name them alkyl on the removal of one hydrogen atom.
An aqueous solution is six percent by mass methanol,, and has a density = 0.988 g/mL. Determine the molarity of ethanol in the solution.
compute the water volume that is released upon its total metabolism to carbon dioxide and H 2 O, taking into account any oxidative phosphorylation that might occur.
3NaHCO3 + H3C6H5O7= 3CO2 + 3H2O + Na3C6H5O7 1g of sodium bicarbonate and 1g citric acid are allowed to react. Find the limiting reagent.
find out the ΔH rxn for the given reaction as C 3 H 4 (g) + 2 H 2 (g) → C 3 H 8 (g)
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