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The combustion of liquid ethanol produces carbon dioxide and water. After 5.8 of ethanol (density = 0.789 ) was allowed to burn in the presence of 12.5 of oxygen gas, 3.10 of water (density = 1.00 ) was collected. Determine the percent yield for the reaction
A certain first-order reaction has a half life of 20.0 minutes. The time (in minutes) required for this reaction to be 87.5% complete is: A) 60 B) 65 C) 70 D) 75
What volume of 0.125 M cobalt(III) sulfate is required to react completely with 4.00 g of potassium carbonate if the reaction proceeds according to the following equation
For the reaction below, if the rate of apperance of Cl2 is .022M/s, what is the rate of appearance of NO
what is the freezing pint of a solution when 13.55 g of Mg(NO3)2 is dissolved in 156 mL of water when Tdegree
Which of the following terms would be used in a description of the mechanism of this reaction? tertiary carbanion, 2-methylpentoxonium ion, sp hybridized pentyne, vicinal dihydroxide, or hydroxide ion.
How many grams of solid magnesium nitrate should be added to 5.0 g of solid sodium nitrate in a 500-mL volumetric flask in order to produce an aqueous 0.25 M solution of NO3
Calculate the pH of the solution that results when 0.55 g of KHP is dissolved in enough water to produce 25.0 ml of solution.
How many gram of each of the following substances will dissolve in 100 mL of cold water. Ce(IO3)4 RaSO4 Pb(NO3)2 (NH4)2SeO4
Calculate the pH of a 100 ml solution containing 1.00 g of imidazole (FM 68.08) and 1.00 g imidazole hydrochloride (FM 104.54). pKa of imidazole is 6.993. How many ml of 1.07 M HClO4 should be added to 1.00 g of imidazole to give a pH of 6.993
A chemist was studying the solubility of two "new" compounds she made in her laboratory at work; NI3 and CBr4. They will not dissolve in each other Explain why they may not be dissolving in each other, based on molecular comparison, and draw the 3..
How much heat (in kf ) is evolved in converting 1.00 mol of steam at 150.0 C to ice at -45.0 C? The heat capacity of steam is 2.01 j/g*C and of ice is 2.09 j/g*C .
Calculate the number of moles of bromine present in 14.5 mL of Br2(l), whose density is 3.12 g/mL.
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