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What is the total pressure in a 11.0 L flask 20.0°C, which contains 0.127 moles of H2 and 0.288 moles of N2?
An aqueous solution containing 7.29 g of an optically pure compound was diluted to 500.0 mL with water and placed in a polarimeter tube 15.0 cm long
A sample of gas has a volume of 2 liters at 40 degrees celsius. what volume will the gas occupy at 0 degree celsius.
There are 0.30 mol SrCl2 in every liter of solution. Calculate the number of moles of SrCl2 that were added. What is the limiting reactant?
Calculate the pH during the titration of 30.00 mL of 0.1000 M NaOH with 0.1000 M HCl after 30.31 mL of the acid
The molar volume of the liquid at this temperature and pressure is 163.3 cm^3/mol. At 100 atm the melting temperature changes to 351.26K. Calculate the enthalpy and entropy of fusion of the solid.
find the vapor pressure of water solution in which the molefraction of HgCl2 is 0.163 at 25 degrees celcius.
To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 12.9 g, and its initial temperature is -13.9 °C. The water resulting from the melted ice reaches the temperature of your skin,
Propane gas, C3H8, reacts with oxygen to produce water and carbon dioxide. Propane has a density of 2.02g/L at room temperature. Express the answer as a chemical equation. Identify all of the phases in the answer.
What is the freezing point of a solution made by mixing 1.40 mol sodium sulfate, Na2(SO4), 1750 g H2O? (Kfp=1.86 C/m)
Calculate the change in entropy of a system (in Joules) when 20.0 moles of oxygen gas undergo an isothermal reversible expansion from 30.0 L to 80.0 L.
Phosphoric acid is a weak triprotic acid with the formula H3PO4. If you have 50.0 mL of a 1.0 M solution of H3PO4, how many grams of NaOH (MM = 40.0g/mol) should you add to make a buffer with a pH of 7.00?
the pH of a 0.20 M solution of a weak monoprotic acid is 3.70. What is the value of the ionization constant
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