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A 1-rm L flask is filled with 1.45 g of argon at 25 {rm ^circ C}. A sample of ethane vapor is added to the same flask until the total pressure is 1.25 atm. what is the partial pressure of argon in the flask?
Suppose that the microwave radiation has a wavelength of 13.2 cm. How many photons are required to heat 200. mL of coffee from 23°C to 62°C?
Acetylene gas (C2Hs) is produced as a result of the reaction CaC2(S)+2H2O(l)-> C2H2(g)+Ca(OH)2(aq).
Calculate the force of attraction between a cation with a valence of +2 and an anion with a valence of -2, the centers
The specific heat of liquid water is 4.184 J/g x C. Calculate the energy required to heat 10.0 g of water from 26.5 C to 83.7 C.
A 0.7549g sample of a pure hydrocarbon burns in oxygen gas to produce 1.9061g of carbon dioxide and 0.3370g of water.
A generic salt, AB, has a molar mass of 243 g/mol and a solubility of 8.90 g/L at 25 C what is the Ksp of this salt
What is the equation for the reaction of cyclohexene wtih MnO4- to form 1,2-cyclohexanediol and MnO2 in a basic medium.
A gaseous mixture contains 420.0 Torr of H2(g), 391.3 Torr of N2(g), and 79.5 Torr of Ar(g). Calculate the mole fraction, X, of each of these gases.
What is the molarity of the stock solution of luminol? What volume of the stock solution (Part A) would contain the number of moles present in the diluted solution (Part B)?
What is the pH of a solution that mixes 30mL of 0.01M CH3COOH with 30mL 0.0075M NaCH3CO2? (Assume the volumes are additive
Element 107 was made by bombarding Bismuth-209 with Chromium-54. One product is a neutron, what is the balanced equation?
this solution was added 1.960 grams of KI and 50.00 mL of a 0.00923 M KIO3 solution. The excess I3- was titrated with 50.00 mL of a 0.02000 M Na2S2O3 solution. What was the mass percent of arsenic trichloride in the original sample?
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