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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.
The density of tungsten is 19.35 g/cm3. A sample of tungsten is placed in a graduated cylinder containing 30.0 mL of water and the water level rises to 34.0 mL. What is the mass in grams of the sample of tungsten?
a) water is sprayed on the ground of an orchard when temperatures are near freezing to keep the fruit from freezing. Explain b) How many kilojoules of energy are released if 5.0 kg of water at 15 degrees C is on the ground and cools and freezes at..
Calculate the amount of heat required to heat a 3.5 kg gold bar from 21 degrees celsius to 67 degrees celcius.
For a protein with a molar mass of 1 x10 6 u calculate the molar concentration required to obtain an osmotic pressure of 10 matm at 25 degrees C
The electrolysis of molten A12O3 at 980 ºC is used to produce metallic aluminum. A current of 520 A is used in the electrolysis cell. What is the rate of formation of aluminum
a sample of oxygen gax occupies a volume of 250ml at 740 torr presure, what volume will it occupy at 800 torr pressure?
sample of gas occupies 10.0-mL at 294.5 K and 1.10 atm. Upon further analysis, the compound is found to be 13.068% C and 86.932% Br. What is the molecular formula of the compound?
How many days would be required for a dose of Cu-64 to decay to 1.0% of its original concentration?
an ideal gas has a pressure of 2.69 atm, and a volume of 91.59 L, what is the temperature of the sample in degrees Celsius?
The partial pressures of gas A and gas B, respectively, are 0.379 atm and 0.675 atm. If 0.190 mol a third gas is added with no change in volume or temperature, what will the total pressure become?
what is the molarity of a solution prepared by dissolving 2.06g of NaOH in a volume of 500.0ml?
What volume of 0.862 M KOH solution is required to make 3.75 L of a solution with pH of 12.8
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