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Given that you know one gas in a mixture of gases has a pressure of .5 atm, and has a mol fraction of .18, what volume will the mixture of gases occupy if the temperature is 390 kelvin, the total number of moles of all the gases combined are 20?
a water tower supplies water through the plumbing in a house. a 2.54-cm-diameter faucet in the house can fill a
A 771 mL gas sample at STP is compressed to a volume of 242 mL, and the temperature is increased to 31?C. What is the new pressure of the gas in Pa
Determine hvap for a compound that has measured vapor pressure of 24.3 torr at 273 k and 135 torr at 325 k
the enthalpy change is 25.8 KJ. How many grams of H2 gas are produced? and d: How many KJ of heat are released when 50.9 g of CO gas reacts completely with H2 to form CH3 OH at constant pressure?
If the titrant has a molarity of 0.2750 M and there are 50.00 mL of analyte present, what is the molarity of the analyte?
A voltaic cell employs the following redox reaction: Sn^2+(aq)+ Mn(s)--> Sn(s) + Mn^2+(aq) Calculate the cell potential at 25 under each of the following conditions.
Analysis of a commercial chewing gum gave results of 0.295 mg/g of BHA. To evaluate the accuracy of their results, they performed 5 spike recoveries, adding an amount of BHA equivalent to 0.181 mg/g to each sample.
a 5.00-ml aliquot of a solution that contains 2.79 ppmfe2 is treated with an appropriate excess of thiocyanate and
Benzene is a organic solvent with the formula, The volume occupied by 1 micromole of liquid benzene and the volume occupied by 1 megamole of benzene as a vapor at STP (assume an ideal gas)
Choose the answer which presents the chemical formulas for two substances in order of decreasing melting point (highest melting point first) and gives a valid reason for this order.
Suppose .050 moles of a substance reacts in 25.0 grams of water. If the water temperature goes from 22 degrees C to 26 degrees C, how much heat was given off? How much heat would be given off if one mole of the substance reacted
Problem- How do you calculate the initial reaction rates for an experiment from [S2O8]/ ?t given mean elapsed times
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