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How many millilitres of concentrated sulphuric acid which 98 mass% h2so4 and has a density of 1.842g/ml,are requied to prepare 500ml of a 0.175m solution of h2so4?
Why is the H-O-H bond angle in a water molecule (H2O) smaller than the H-C-H bond angles in methane (CH4)
Using molecular orbital analysis, predict which species of the following pairs would have the stronger bonding between the two atoms
How many grams of dry NH4Cl need to be added to 2.00 L of a 0.600 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.89?
A 9.445g sample of a mixture of CuSO4 5H20 and BaCl2 2H20 is found to have excess SO4^2- ion upon mixing with water and 3.749g BaSO4 is isolated. What mass of BaCl2 H2O was used to make the BaSO4 isolated
calculate the concentration of all soluble Hg(II) species. Which Hg(II) species is most prevalent? Assume there are no solids present, that the major ligands present are Cl- and OH-, and ignore activity corrections.
given the reaction ca 2h2o caoh2 h2what is the total number of moles of ca needed to react completely with 4.0 moles
Many odors from solvents, perfumes, and paint strippers are derived from aldehydes or ketones
Louis de Broglie won the Nobel Prize in 1929 for his discovery that the characteristic wavelength of an electron is inversely proportional to its linear
What is the molarity of the NaBr produced when 50.0 mL of 4.80 M NaOH is mixed with 150.0 mL of 1.60 M HBr
Problem- Show how free-radical halogenation might be used to synthesize the following compounds. In each case, explain why we expect to get a single major product.
Use the information given to calculate the enthalpy of formation of 3-Pentanol. a. +1204 kJmol-1 b. +2637 kJmol-1 c. -7000 kJmol-1 d. -372 kJmol-1
How much heat is required to change one gram of ethanol ice at 144 degrees C to ethanol vapor at 78 degrees C.
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