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describe why benzoic acid and 4-nitroaniline must be air dried for such a long time or placed in an oven before taking a final mass and finding the melting point
Describe 3 uses of rhodium as a catalyst (written description and the balanced chemical equation) for its use in 1) three way catalytic converters on cars 2) the manufacture of acetic acid by catalytic carbonylation of methanol, called the Monsanto p..
What is the problem of attempting an Adols condensation using different aldehydes
What are the odds of finding a particle in a one dimensional box between 0 and L/2, that is L is the length of the box. Assume that the particle is in the second to lowest energy level (n = 2).
how much potassium chlorate in needed to produce 20.0mL of oxygen gas at 670mm Hg and 20 degrees celcius?
Suppose a snack bar is burned in a calorimeter and heats 2,000 g water by 20 °C. How much heat energy was released? (Hint: Use the specific heat equation.) Give your answer in both joules and calories.
An environmental engineer tells you that adjusting the pH to 8.5 will decrease total soluble Cr(III) to below 1 mg/L (1.92 x 10-5 M). Is this true? In other words, is the solubility of Cr(III) in the presence of Cr(OH)3(s) at a pH of 8.5 ? 1 mg/L.
What is the wavelength (in nanometers) associated with a photon which has an energy content of 4.86E-24 kJ
A monoprotic acid donates a single proton. If you dissolve two aspirin tablets in a 300 m glass of water, what is the pH of the solution
Calculate the enthalpy of vaporization of Br2. This element has vapor pressures of 271 mm Hg and 565 mm Hg at 30.0 °C and 50.0 °C, respectively.
calcium malonate, the salt of malonic acid, is found in beetroot and is known as an inhibtor of the citric acid cyle. if a sample of beetroot disolved in water has a pH of 8.20,
A 34.5-g sample of an alloy at 93.0 degrees Celsius is placed into 50.0 g of water at 22.0 degrees Celsius in an insulated coffee-cup calorimeter with a heat capacity of 9.2 J/K. If the final temperature of the system is 31.1 degrees Celsius, what..
if a raindrop weighs 65 mg on average and 5.1x10^5 raindrops fall on a lawn every minute what mass in kg of rain falls in 1.5 hours
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