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An evaluation of R was performed, following the procedure described in this module. The barometric pressure was 736 torr, the temperature was 295 K, and the volume of hydrogen gas collected was 35.6 mL. The calculated value of R was 82.1mL atm K-1 mol-1.
1) How many grams of magnesium metal were used?
2) If the vapor pressure of water had not been taken into account, what would have been the calculated value of R?
3) If the syringe volume had been incorrectly read, giving a calculated system volume of 25.6 mL, what would have been the percent error in the calculated value of R?
The annual production of sulfur dioxide from burning coal and fossil fuels, auto exhaust and other resources is about 26 million tons. the equation for the reaction is S + O2= SO2.
at 986°C is 0.63. A rigid cylinder at that temperature contains 1.2 atm of carbon monoxide, 0.20 atm of water vapor, 0.30 atm of carbon dioxide, and 0.27 atm of hydrogen. Is the system at equilibrium?
What is the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2? The Ka for acetic acid is 1.8 x 10-5.
What is the volume of a gas at T=35.0C and P=675 torr if the same sample occupied 42.6L at T=-27.3C and P=1.000 atm.
What is the specific heat capacity of a metal that has capacity of a metal that has a mass of 25.00 grams and absorbs 1000.0 j of heat in cooling from 80.0 c to 40.0 c?
consider the reaction in which 410g of Ca(NO3)2 react with just the right amount of magnesium metal in a single replacement reaction. how many grams of lithium are required?
explain how to determine the instantaneous rate of formation of i3- at exactly 20 minutes. draw on the graph above as part of your. explanation.
A 345 mL container holds NH3 at a pressure of 745 torr and a temperature of 45 degrees Celsius. What is the molar concentration of ammonia in the container?
How much heat is required to convert 32 g of ethanol at 27 degrees C to the vapor phase at 78 degrees C?
Calculate the initial pH, pH after addition of 20 mL HCl, pH after addition of 50 mL HCl, pH at the equivalence point, and pH after addition of 120 mL HCl.
If 3.00 moles of ZnS are combined with 4.00 moles of O2, how many moles of ZnO can be produced?
Allyl sulfide, C6H10S, is a compound that has the odor of garlic. How many sulfur atoms are in 23.2 g of C6H10S?
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