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If gold has a density of 19.3 g/cm3, how heavy in pounds is a gold bar at Fort Knox (dimensions of 7.0 in x 3 5/8 in x 1 3/4 inches? If the current price for gold is $1400 per troy ounce, how much is 1 bar of gold worth in ? (make sure you look up troy ounce!)
what is the molar mass of the acid? If the standardization of the NaOH solution, why is it important to rinse the wet pipet with small portions of the standard oxalic acid solution
What is the molar mass of a compound if one mole of the compound contains two moles of oxygen atoms, 6.022 x 10^24 hydrogen atoms, and 60.05 grams of carbon?
Calculate the number of grams of alcohol present in 1.00 L of 87 proof gin. The density of ethanol is 0.798 g/mL.
Calculate the pH of a 0.42 M solution of sodium acetate, CH3COONa. (Ka(acetic acid) = 1.8 x 10-5 )
What is the partial pressure of hydrogen gas in a mixture of hydrogen and helium if the total pressure is 588 mm Hg and the partial pressure of helium is 445 mm Hg?
Draw the line and wedge structures of the products obtained on addition of iodine azide to both cis and trans-2-butenes. Assign ‘R' or ‘S' to the asymmetric centers in your product.
HFC's (hydrofluorocarbons) are replacing CFC's (chlorofluorocarbons) because the C-H and C-F bonds are stronger than C-Cl bonds. If the bond enthalpy of a C-F bond is 482 kJ/mol.
determine the freezing point depression, delta Tf, for the ionic solution. b. determine m effective for ionic solution. c. determine the van't Hoff factor, i, for the ionic compound.
Calculate the pH of a solution prepared by dissolving 0.30 g of BaO in enough water to make 0.800 L of solution.
A gas is compressed from an initial volume of 5.60 to a final volume of 1.23 by an external pressure of 1.00 . During the compression the gas releases 123 of heat. What is the change in internal energy of the gas?
hydrogen is collected over water, two gases are present hydrogen and water vapor.calculate partial pressure of hydrogen gas. Barometric pressure = 773.94 mmhg.
What is the equilibrium concentration of hydronium ion in a solution that is 0.0877 M in HX and 0.240 M in X1- ion?
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