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For a certain experiment, R-140a vapor is contained in a sealed glass tube at 20 degrees celcius. We want to know the pressure at this condition, but there is no means of measuring it since the tube is sealed. However, if the tube is cooled to -20 degrees celcius, small droplets of liquid are observed on the glass walls. What is the initial pressure?
A 2 mL sample was taken of a solution of barium iodate at 10 degree C. the sample was mixed with 2 mL of 0.5 M KI and 2 mL of 1M HCl. The transmittance of the mixture was read and compared to a calibration curve which indicated a concentration of ..
Suppose that 0.570 mol of methane is reacted with 0.720 mol of fluorine forming CF4(g) and HF(g) as sole products. Assuming that the reaction occurs at constant pressure, how much heat is released?
What mass of carbon dioxide will be produced when 29.9 g of butane reacts with an excess of oxygen in the following reaction
What is the equilibrium concentration of H+ in the following reaction, assuming that you start with a 1.00 M solution of acetic acid (CH3COOH).
One mole of N2 and three moles of H2 are placed in a flask at 375 C. Calculate the total pressure of the system at equilibrium if the mole fraction of NH3 is 0.21. The Kp for the reaction is 4.31*10^4.
Write the cell reaction for the combination of these half-cell reactions that leads to the largest positive cell emf
the molecular weight of citric acid is 0.030m. how many grams of citric acid molecular weight 192 are present in a
Following a high carbohydrate meal, conversion of fructose-6-phospahte to fructose-1,6-bisphosphate will be catalyzed by- phosphofructokinase-2, which is activated when insulin causes dephosphorylation of phosphofructokinase-1
What is the theoretical yield of aspirin if 153 kg of salicylic acid is allowed to react with 179 kg of acetic anhydride?
What is the percent yield of a reaction where 15.3g of oil of wintergreen is collected after 16.3g salicylic acid
A microwave oven operates at 2.70 . What is the wavelength of the radiation produced by this appliance
A gas mixture contains 8.10g of N2, 1.70 g of H2, and 14.70 g of CH4. what is the mole fraction of H2 in the mixture
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