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A sample of an ideal gas at 27°C and 380 torr occupied a volume of 492 cm3. What was the number of moles of gas in this sample? (R = 0.082 liter atm mole-1 deg-1).
Calculate the percentages of dissociated and undissociated forms present in the following solutions:
Glycolysis is associated to the pentose phosphate pathway through intermediates. Identify as well as show how these intermediates are interconnected in two pathways.
One hundred fifty kmol of an aqueous phosphoric acid solution contains 5.00 mole % H3PO4. The solution is concentrated by adding pure phosphoric acid at a rate of 20.0 L/min
The mixture of saltwater and ice around the ice cream bucket in the ice cream machine is at a temperature of -8.40C. What mass of sodium chloride would be found in 1,477 grams of this solution?
The standard molar heat of vaporization for water is 40.79 kJ/mol. How much energy would be required to vaporize 29.0 g of water?Answer in units of kJ.
Calculate the number of moles of sodium hydroxide that will completely react with the amount of olive oil and Crisco shortening that you are using (15g olive oil and 34g Crisco).
The temperature of a 12.58 g sample of calcium carbonate increases from 23.6 c to 38.2 C. if the specific heat of calcuim carbonate is 0.82 J/g-K, how many joules of heat are absorb
Sodium azide (NaN3) is sometimes added to water to kill bacteria. Calculate the concentration of all species in a 0.010 M solution of NaN3. The Ka value for hydrazoic acid (HN3) is 1.9 * 10-5.
a solution formed by dissolving 166.6 grams of common table sugar in 686.2 ml of h2o. compute the vapor pressure at 25
1) Explain how long would it take before a lethal concentration is reached with a well tuned car. Define how long for the poorly tuned car. 2) State the mass balance equation for this solution using simply variables and eliminating terms that are ze..
A flask containing a mixture of NH3(g) and CH4(g) is cooled. At -33.3 degrees celcius a liquid begins to form in the flask. What is the liquid? NH3(g) or CH4(g)
the hope diamond weighs 44.0 carats. determine the volume occupied by the diamond given that its density is 3.5 gcm3 at
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