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A sample of gas weighs 4.542g and has a volume of 870.0mL at 945.0 torr and 39.0 degrees Celsius. What is the molar mass?
The following problem is based on the "Nutrition Facts" found on the wrapper of an energy bar, assuming a 2000 calorie diet. The energy bar contains 100 mg of sodium, which constitutes
Thermal measurements show that deltaH for the I---->II phase transition is -743.1 J/mole, and deltaS for the same transition is -17.0 J/K/mole. At what temperature are solids I and II in equilibrium
Calculate molarity?if one mole of sodium hydroxide was dissolved estimate the number of calories that would be produced. (ΔHsolnNaOH)
Calculate the pH of a solution prepared by mixing 0.0800 mol of chloroacetic acid plus 0.0400 mol of sodium chloroacetate in 1.04 L of water. (pKa of chloroacetic acid = 2.865.)
A metal was heat up in hot water and then put into a Styrofoam cup of water at room temperature. the specific heat was calculated.
Give a balanced chemical equation for when liquid octane (C8H18) is combusted in oxygen gas to yield carbon dioxide gas and water vapor?
A solution of this complex in a 1 cm cuvette had an absorbance of0.760 at this wavelength. Calculate the molarity of this solution.
A spherical fat cell has a diameter of 2.47 micrometers. The fat cell contains three copies of the protein azurin. What is the molar concentration of azurin within the fat cell
Describe all the symmetry planes in the staggered conformation of ethane. Draw a figure and arrows to show any rotational symmetry axes in the staggered conformation of ethane.
Vitamin C (L-ascorbic acid; MW = 176.0 g/mol) is a weak acid (pKa = 4.863). Suppose a 500.0 mg tablet is dissolved in water and titrated with 0.100 M NaOH. How many mL of NaOH are required to reach the equivalence point?
How many moles of H2SO4 must be present to react completely with the NaOH delivered from the buret.
How many grams of copper may be formed by the passage of 22,988 C through an electrolytic cell that contains an aqueous cuprous
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