Determining mole percent o2 in the mixture
A gaseous mixture of O2 and Kr has a density of 1.140 g/L at 415 torr and 300. K. What is the mole percent O2 in the mixture?
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A gas sample containing 1.35 mol at 25°C exerts a pressure of 405 torr. Some gas is added to the same container, and the temperature is increased to 50.°C. If the pressure increases to 800. torr, how many moles of gas were added to the con
At room temperature (20 degrees celsius), milk turns sour in about 64 hours. In a refrigerator at 3 degrees celsius, milk can be stored three times as long before it sours.
To begin, select a company of your choice. It may be the company you work for, a company that you have worked for in the past, or a company that you would like to work for, and, after briefly explaining the relationship between cost allocation and
The heat capacity of liquid water is 4.18 J/g degrees C and the heat of vaporization is 40. kJ/mol. How many kilojoules of heat must be provided to convert 1.00 g of liquid water at 67 degrees C into 1.00 g of steam at 100 degrees C?
You wish to make a 0.355 M hydrobromic acid solution from a stock solution of 3.00 M hydrobromic acid. How much concentrated acid must you add to obtain a total volume of 175 mL of the dilute solution ?
Calculate the expected change in temperature for 4.5 g of NH4NO3 dissolved in 100.0 mL of H20. Assume that the calorimeter absorbs no heat. (ie. Ccal=0)
Which of the following statements about writing molecular, complete and net ionic equations is FALSE A net ionic equation is an equation showing only the species that actually change during the reaction
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