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The chemist discovers a more efficient catalyst that can produce ethyl butyrate with a 78.0g yield. How many grams would be produced from 7.95g of butanoic acid and excess ethanol?
When a 5.8 g serving of cereal burns in the same bomb calorimeter, the temperatrue of the calorimeter increases by 1.92 C. Calculate the fuel value of the cereal in kj/g.
Write the structure of the product obtained when cyclohexane is used to decolorize bromine-containing solutions
A 12.0g- sample of a gas has a volume of 5.25g at 28 celcius and 757mmHg If 2.7g of the same gas is added to this constant 5.25L- volume and the temperature raised to 64 celsius, what is the new gas pressure?
A water treatment plant has a flowrate of 6,000 m3/d. Determine the following (assume filtration rate is 60 m3/d-m2): a. Total filter area
Calculate the pH of a buffer solution that contains 0.25 M benzoic acid (C6H5CO2H) and 0.15 M sodium benzoate (C6H5COONa). [Ka = 6.5 ? 10-5 for benzoic acid]
The temperature of the calorimeter increases from 24.56 *C to 32.01 *C. What is the heat of combustion per gram of quinone and per mole of quinone?
Arrange the following aqueous solutions in order of increasing freezing points
a rigid container is filled with liquid acetone at 20 degrees C and 1 bar. through heat transfer at constant volume, a pressure of 100 bar is generated
The half-life for the reaction at 550 C is 81.3 seconds. How long does it take for 78.5% of a phosphine sample to decompose?
The glass electrode used in commercial pH meters gives an electrical response proportional to the concentration of hydrogen ion. To convert these responses to a pH reading
You have discovered a new element with an atomic weight of 260 g/mol and a density of 30 g/cm3. If the atoms pack on a BCC lattice what is the hard sphere atomic radius R (in nm)
A 2.476 g sample of a monoprotic acid was dissolved in wate. it took 21.36 mL of a 0.1577 M NaOH solution to neutralize the acid. calculate the molar mass of the acid.
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