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1. A cylinder with a moveable piston contains 0.79 mol of gas and has a volume of 333 mL. What will its volume be if an additional 0.29 mol of gas is added to the cylinder? (Assume constant temperature and pressure.) Express your answer using two significant figures.
2. A weather balloon is inflated to a volume of 25.4 L at a pressure of 740 mmHg and a temperature of 23.6 °C. The balloon rises in the atmosphere to an altitude, where the pressure is 375 mmHg and the temperature is -13.2 °C (Assuming the balloon can freely expand, calculate the volume of the balloon at this altitude)
3. A sample of nitrogen gas in a 1.60-L container exerts a pressure of 1.52 atm at 26 °C What is the pressure if the volume of the container is maintained constant and the temperature is raised to 324 °C?
4. A sample of gas has a mass of 0.550 g. Its volume is 116 mL at a temperature of 83 C and a pressure of 742 mmHg (Find the molar mass of the gas.)
One metric ton (1000 kg) of coal is required to produce 7.3 MW-hr of electrical energy. In 1993, the Thomas Hill power plant (a small, coal-fired plant supplying rural electric cooperatives) produced 7100000.0 MW-hr.
What is the mass of a rectangular piece of copper 24.4cm x 11.4cm x 6.6cm? The density of copper is 8.92 g/cm^3.
choose the most reasonable substance that fits the description in each casea element with higher first ionization
What volume of bromine trifluoride is required to produce 107 liters of fluorine gas according to the following reaction? (All gases are at the same temperature and pressure.) bromine trifluoride (g) -------bromine (g) + fluorine (g)
the average ph of precipitation in rural areas is 6.80. assuming that the phnbspis controlled by the carbonate system
a mixture of gaseous oxygen and nitrogen is stored at atmospheric pressure in a 3.7 l iron conatianer maintained at
You could determine Ka for benzoic acid by measuring the pH of a 0.010 M solution of benzoic acid. Why is graphical method (pH vs volume of NaOH added) a better way of determining Ka
Calculate the average speed of an oxygen gas molecule, O2, at 21.0 degrees Celsius. Express your answer numerically in meters per second.
Explain the Bohr Effect. How does low pH and high temperature affect oxygen binding to hemoglobin?
What mass of NaHCO3 must be added to 1.00 L of 0.10 M Na2CO3 to make a buffer solution whose pH=9.85? pKa2(H2CO3)=10.33
Of course as a fruit pumpkin pie comes to mind right away but I love pumpkin muffins too and who could forget the wonderful pumpkin spiced latte, served up seasonally at Dunkin Donuts? Who would like some pumpkin pancakes for breakfast?
How would you find the Ksp of a salt using only molecular weight and solubility?
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