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What are the chemical properties, uses, and primary hazards associated with common oxidizers including concentratednitric acid?
Calculate the molality of a solution made by dissolving 34.0 g of NH3 in 2.00 x 103 mL of water (MMNH3 = 17.04 g/mol, dH2O = 1.00 g/mL
What volume of hydrochloric acid solution of 0.25 M must be diluted to prepare 1.00 L of 0.040 M HCl and calculate Keq at this temperature for the given reaction 2 NOCl (g) W 2 NO (g) + Cl 2 (g) ( reaction is at equilibrium):
These are characteristics of the titration curve for 25.0 mL of 0.400 M NH3(aq) titrated with 0.335 M HI(aq). (For NH3, Kb = 1.8x10-5.) (1a) The initial pH : (1b) The volume of HI(aq) required to reach the equivalence point
A 0.2 M sodium chlorobenzoate (NaC7H4ClO2) solutions has a pH of 8.65. Calculate the pH of a 0.20 M cholorbenzoic acid (HC7H4ClO2) solution.
A gas occupying 28mL at standard conditions is heated to 18C while the pressure is reduced to 0.98221 atm. What is the new volume occupied by the gas? Answer in units of mL.
Air is about 78.% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules.
a sample of nitrogen gas in a 4.7-l container at a temperature of 28degc exerts a pressure of 3.6 atm. calculate the
A radioactive sample contains 2.50g of an isotope with a half-life of 3.8 days. How much of the isotope in grams will remain after 14.2 days
Chlorine forms a number of oxides with the following oxidation numbers: +1,+3,+4,+6 &+7.Write formula for each of these compounds.
calculate the mole fraction of kr and its concentration in partsper million by volume. kr composition by volume is
If you drink a glass of water, what mass, in grams, of this "unknown" substance will you ingest. The volume of your drink was 250 mL and the density of the water was 1.00g/mL.
An electron has an uncertainty in its position of 594pm . What is the uncertainty in its velocity?
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