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how to find the maximum percentage yield of the ketene when the phase-gas decomposition of acetic acid at 1189K proceeds by way of two parallel reactions.
Consider the same dilution above for an SN1 reaction. Would the time required for 95% for the starting material to react change as a result of this dilution?
How many grams of oxygen gas are required to produce 7.68 kJ of heat when hydrogen gas burns at constant pressure to produce gaseous water?
An industrial chemist puts 1.45 mol each of H2(g) and CO2(g) in a 1.00-L container at a certain temperature. When equilibrium is reached, 0.60 mol of CO(g) is in the container. Find Keq at this temp
Given that the ph for acetic acid is 2.41, the ka=1.8X10-5 and assuming the density of vinegar to be 1.00g/cm3, what is the percent dissociation for acetic acid in vinegar?
Suppose that a sample of pure water is saturated with gaseious CO2 to form a solution of carbonic acid. which response has the following species arranged in the order of decreasing concentrations at
The vapour pressure of water at that temperature is 27.1 mm Hg. Assume that all of the KClO3(s) decomposed. What was the %w/w of KClO3(s) in the original mixture?
iron has a density of 7.87 g/cm. What mass of iron would be required to cover a football playing surface of 120 yards x 60 yards to a depth of 1.0mm?
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of N2O(g) is ______kJ/mol
what is the pH of a 0.100M solution of benzoic acid if ka=6.5x10-5 and the equilibrium equation of interest is : HBz(aq)+h20(l)<--->h3O+(aq)+Bz-(aq).
A buffer is made using 45.0 mL of 0.750 M HC3H5O2 and 55.0 mL of 0.700 M NaC3H5O2. What volume of 0.10 M NaOH must be added to change the pH of the original buffer solution by 2.5%? Ka for this acid
A gas mixture is made by combining 7.9g each of Ar and Ne and an unknown diatomic gas. At STP the mixture occupies a volume of 18.73L. What is the molar mass of the unknow gas?
If 156 mL of wet H2 is collected over water at 24 degrees celcius and a barometric pressure of 737 torr, how many grams of Zn have been consumed? (The vapor pressure of water is 22.3 torr.)
If 28.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
Discuss two ways that ammonium compounds decompose when they are heated. What chemical reaction is involved in the thermal decomposition of ammonium persulfate?
What problems and dangerous situations can result from their improper storage and use (i.e., mixing them together, etc.)? What government agency and regulation(s) account for the labeling and regist
Fifty mililiters of 1.00M HNO3 was added to 50.5 mL of 1.00M of NaOH solution. calculate the mass of the reaction mixture.
How many grams of aspirin were lost in the washing process you used to purify your product, assuming you used 50 mL of water for washing? The solubility of aspirin in water is 0.33 g per 100 ml at r
What are some of the benefits of using geothermal energy to produce electricity? What are some of the negatives associated with geothermal production?
When aqueous solutions of lead( II) ion are treated with potassium chromate solution, a bright yellow precipitate of lead( II) chromate, PbCrO4, forms. How many grams of lead chromate form when a 1.
Concentrated sodium hydroxide is used as a laboratory reagent. the percent by mass of sodium hydroxide is 69.0%. what is the mass of water that contains 120.0g of sodium hydroxide?
How many milliliters of H2O vapor, measured at 291. °C and 724. torr, are formed when 49.0 mL of NH3 at 815. torr and 117. °C react with oxygen according to the following equation?
1.0 mol of CaCN2 and 1.0 mole of water are mixed together:How much NH3 could be produced?