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1.7g of 2,3-dimethyl-1,3-butadiene is refluxed with 1.7g of maleic anhydride in toluene, and 1g of product is recrystallized from hexanes. The product has the formula C10H12O3. Calculate the percent yield. Answer to within 0.1 percent units.
How many kJ of heat are needed to completely melt 1.30 moles of , given that the water is at its melting point? The heat of fusion for water is 6.02 kJ/mole.
How many moles of Na2SO3 were added to the calorimeter cup if 40.0mL 0.50 M NaOCl and 60.0mL 0.50 M Na2SO3 were combined?
Some athletes have as little as 3.00 body fat. If such a person has a body mass of 45.0 , how many of body fat does that person have
For which of the following reactions does delta H reaction = delta H standard H2(g) + S(rhombic) yeilds H2S(g)
Provide the reaction mechanism when p-acetaminobenzensulfonic chloride reacts with water
Why is NaHCO added to the freshly brewed tea, prior to extraction with CH?Cl. If an intractable emulsion is produced during extraction of caffeine, how might you attempt to break up the emulsion
How much energy is needed to raise the temperature of 16.0g of gold by 17.0degrees C, Answer in units of J
di ethyl ethal is a volatile, highly inflammable organic liquid that is used mainly as a solvebt. the vapour pressure of di ethyl ethal is 4.01mmHg at 18 degree celcius.
What is the pH of the solution when 35.00 ml of sodium hydroxide has been added
A reaction with the activation energy Ea= 219.00 kJ/mol, has a rate constant k = 2.400 x 101 at 565.00 Kelvin. Determine the rate constant when the temperature is changed to 861.00 Kelvin. R = 8.314 J K-1mol-1
At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2 is 0.0620 g/L what is the Ksp of this salt at this temperature
Why is lactose much more soluble in water than in ethanol?
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