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Because of increasing evidence of damage to the ozone layer, chlorofluorocarbon (CFC) production was banned in 1996. However, there are about 100 million auto air conditioners that still use CFC-12 (CF2Cl2). These air conditioners are recharged from stockpiled supplies of CFC-12. If each of the 100 million automobiles contains 1.1 kg of CFC-12 and leaks 25% of its CFC-12 into the atmosphere per year, how much Cl in kilograms is added to the atmosphere each year due to auto air conditioners? (Assume two significant figures in your calculations.)
How many moles of potassium carbonate will be produced if 400.0 g of potassium hydrogen carbonate are heated?
What is the formula weight of KI? What quantity of KI is present in 301 mL of a 0.30 M solution?
predict the atomic radius for selenium se given the atomic radius of sulfur s 0.104 nm and tellurium te 0.143
What volume of CO2 gas is produced by the complete combustion of 2.6L (C3H8) gas? Assume all gas volumes are measured at the same temperature and pressure. C3H8 + 5O2 ---> 3CO2 + 4H2O
Describe the error that has occured; that is , is the mass of the anhydrous salt remaining in the crucible reported as being too high or low? Explain.
Since the air is going at 25 C and assuming atmospheric pressure, calculate the actual volume of air. Calculate the number of moles of CO2, H2O, O2 and N2 in the flue gas
There is a solution which includes [H+]=0.3M, [Fe+2]=0.05M and [Pb+2]=0.05M and that this solution is saturated with H2S (means you take value [H2S]= 0.1M)
This leaves the aspartic acid amine group and the side chain carboxylic acid functional group of aspartic acid. Therefore aspartame will have an isoelectric point at a pH between the pKa values of these functional groups
Let's assume that your education has led you to rob armored cars. In your latest heist, if you were faced with bags of coins that weighed the same, which bag would you take: pennies, nickels, dimes or quarters
Determine the amount of heat energy lost by the same amount (40.0 g) sample of water (specific heat = 4.184 J/goC) and same temperature change.
an aluminum rod at 55.0 degrees celsius is put into 399 grams of water at an initial temperature of 20.0 degrees celsius. If the final temperature of water and rod are 30.0 degrees celsius, what was the mass of the aluminum rod?
Provide simple instructions for preparing 1.00 L of a solution having pH = 7.00 at 298 K. Your instructions should include the volumes of the solutions required.
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