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Alcohol levels in blood can be determined by a redox titration with potassium dichromate according to the balanced equation:
C2H5OH(aq)+2Cr2O7^2-(aq)+16H+(aq)---> 2CO2(g)+4Cr^3+(aq)+11H2O(l)
What is the blood alcohol level in mass percent if 8.26mL of 0.04988 M K2Cr2O7 is required for titration of a 10.005g sample of blood?
Hydration of alkynes (via oxymercuration) gives good yields of single compounds only with symmetrical or terminal alkynes
Iron has a density of 7.87 g/cm3. What mass of iron would be required to cover a football playing surface of 120 yds × 60 yds to a depth of 10 mm? (1 inch = 2.54 cm; 1 lb = 453.6 g)
determine the amount of heat required to convert 2.3 mol of ice at -13.1 degrees celcius to liquid water at 21.6 degrees celcius.
If 8.6 L of NO is combined with excess O2 at STP, what is the volume in liters of the NO2 produced?
The rate of the reaction in terms of the "disappearance of reactant" includes the change in the concentration of the reactant, the time interval, and the coefficient of the reactant
a pound of coffee beans yields 70 cups of coffee (4cups=1qt) how many milliliters of coffee can be obtained from 1 g of coffee beans
1)WhenH2(g)reacts withC2H4(g)to formC2H6(g),137kJ of energy areevolvedfor each mole ofH2(g)that reacts. Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.
how much potssium chlorae is needed to produce 20.0 mL of oxygen gas at 670 mm Hg and 20 degrees celcius.
Ethanol has {rm mp} = -114.5 ^circ {rm C}, {rm bp} = 78.4 ^circ {rm C} , Delta H_{rm vap} = 38.56 {rm kJ/mol} and Delta H_{rm fusion} = 4.60 {rm kJ/mol}. The molar heat capacity is 113 {rm J / left( K cdot mol right)} for the liquid and 65.7 {rm J..
What is the pressure in a 17.1 L cylinder filled with 47.9 g of oxygen gas at a temperature of 341 K?
Explain your reasoning for each by writing a balanced net ionic equation to describe its behavior in water.
calculate the molar absorptivity (epslion) of Cu2+ at 620nm given that the curvettes used in lab had a pathlegth of 1.00 cm.
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