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We have a situation where hydrogen gas at 300 degrees C is flowing out of a tube at the rate of 100mL/min.  The tube is located in a fume hood operating at 25 degrees C and 1 atm. What flow rate of air must be entering the hood so that the hydrogen gas does not pose a flammability hazard?
How many moles of KHP were weighed out? How many moles of NaOH were required to neutralize the KHP that was weighed out?
Calculate the integral of dqrev / T for each of the 4 steps in the Carnot cycle of, and sum them to prove that their sum equals zero. This turns out to also be true for any cyclic process that returns the system
two compounds a and b form an ideal solution at all compositions. if the vapor pressure of pure a at 80 degrees c is
For each of the following, calculate the concentration of Tris, Tris-H+ and the pH of the solution in each of the following solutions.
HNO3 was required for complete reaction with 0.8784+or- 0.0008g of Na2CO3 (FM 105.988+or- 0.001). Find the molarity of the HNO3 and its absolute uncertainty
The Ksp of Ba3(Po4)2 is 6.0 x 10^-39. How many grams of Ba3(PO4)2 can be dissolved in 250mL of solution before the solution become saturated. Molar Mass of Ba3(PO4)2 = 601.9 g/mole
The molar heat capacities of iron and gold are 25.19 J/(mol c) and 25.41 j(mol c). what is the final temp of the water and the pieces of metal
A balloon is inflated to a volume of 8.3 L on a day when the atmospheric pressure is 652 mm Hg. The next day, as a storm front arrives, the atmospheric pressure drops to 620 mm Hg
Compute the pH of the titration solution before any acid is added, when the titration is 1.00 mL short of the equivalence point, when the titration is at the equivalence point, and when the titration is 1.00 mL past the equivalence point.
calculate (Triangle H degree R) for the following reaction- H2S(g) + (3/2)O2(g) ---> SO2(g) + H2O(g)
A 0.7445 g sample containing only CaCO3 and Mg(OH)2 is titrated using 0.3004 M HNO3. If it takes 31.75 mL of HNO3 to reach the end point of the titration
A sample of potassium nitrate is collected in a 1500 mL flask. The pressure of the gas in the flask is 2.2 atm and the temperature is recorded to be 346.7K. How many molecules of O2 gas were produced
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