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An average daily traveling distance is about 40 miles a day for a commuter. The car has a city mileage of 20 miles per gallon. If the car is replaced with the new car with city mileage off 32 miles per gallon and the average cost of gasoline is $3.62 per gallon, estimate the amount of fuel, energy, and money conserved with the new car per year.
another part says spectra of caffeine, benzoic acid, and a mountain dew sample in 0.10 M HCl. On a graph it has the points 8.74 mg/L for benzoic acid, 1.5 dilution for mountain dew soda,
At equilibrium, the concentration of A is 0.381 M and that of B is 0.154 M. What is the value of the equilibrium constant, Keq?
Suppose you wanted to heat a mug of 250. mL water from room temperature, 25°C, to 100°C to make a cup of tea. How much energy (in joules and in calories) would you need from your microwave.
The rate of the reaction of nitrogen monoxide with oxygen was measured at 25 degrees C. starting with various initial concentrations of reactants NO and O2.
In the chemical formula for alu, there are 12 water molecules present. It is also possible to prepare the anhydrous compound potassium aluminum sulfate. On the "molecular scale" describe how a crystal of alum differs from a crystal of potassium al..
What is the pH of a buffer that results when .60mol NaF is mixed with 100ml of 2.0M HCl and diluted with water to a final volume of 250 ml? (Ka of HF=7.2e-4)
what ions will the following elements form?
What is the molarity of a solution made by dissolving 74.8 g of strontium perchlorate in sufficient water
A reaction vessel contains 13.9g of CO and 13.9g of O2. How many grams of CO2 could be produced according to the following reaction. 2CO + O2 ---> 2CO2
copper-64 is used to study brain tumors. assume that the original mass of a sample of copper-64 is 26.00g. After 64 hours, all that remains is 0.8125g of copper-64. What is the half-life of this radioactive isotope?
Write out the balanced overall equation for the redox reaction that could occur between these species. An electric current would have to have what minimum potential to force the reaction forward?
when aluminum is heated in oxygen, aluminum oxide is formed. What weight of the oxide can be obtained from 25.0 g of the metal.
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