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Consider a sample of helium gas at 23 C with a volume of 5.60 L at a pressure of 2.45 atm. The pressure is changed to 8.75 atm and the gas is cooled to 15 C. Calculate the new volume of the gas using the ideal gas equation.
A copper tube is 1 inch in diameter and 2 feet long, it is filled with steel balls of 1 inch diameter. The space between the balls is filled with water. the specific gravity of the steel b all is 7.8. What is the bulk denisty of the contents of th..
A solution of ethanol (C2H5OH) in water is prepared by dissolving 73.2 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution.
dissolved in water and completely neutralized by the addition of 43.70 mL of 0.303 M NaOH. Calculate the molar mass of the acid, assuming it to be a monoprotic acid.
names of five alkenes having the molecular formula C6H12 that produce hexane on catalytic hydrogenation
All of the following are factors that affect reaction rate EXCEPT a. density of reactants b. presence of a catalyst
A patient needs 2.40×10-2 of a sulfa drug. There are 8.00 tablets in stock. How many tablets should be given?
Indium has only two naturally occurring isotopes. The mass of indium-113 is 112.9041 and the mass of indium-115 is 114.9039 .
Calculate the amount of heat liberated (in kJ) from 305 g of mercury when it cools from 82.0°C to 13.0°C.
The ionization energy of tin is 708.0 kJ/mol. Calculate the maximum wavelength of light that will ionize tin.
What is the molality of ethanol in a solution made by dissolving 14.6 g of ethanol, C2H5OH, in 53.6 g of water?
How many mL of 4.50 M sodium hydroxide must be added to 250 mL of a 0.200 M nitrous acid solution to make a buffer with pH = 3.00?
What should the analyst do to accuratley determine the concentration for the unknown using Beer's Law? Extending the calibration curve or using the equation for the line are not correct answers to this equation.
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