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What is the mole fraction of ethanol in a solution made from mixing 299 grams of ethanol (C2H5OH) and 360 grams of water? (Round your answer to 2 places after the decimal.)
Calculate the temperature change which will be caused by the following process: 0.640 moles of NH4Cl are dissolved in 1.00 L of water.
The concentration of each gas once equilibrium is reached. The new equilibrium concentrations if the volume is suddenly halved (still at 298K)
If 37.0 grams of hydrogen sulfide gas (H2S; MM = 34.08 g/mol) react with 37.1 grams of oxygen gas (O2, MM = 32.00 g/mol), what is the mass of sulfur dioxide (SO2, MM = 64.06 g/mol) gas produced?
A 20.0-mL sample of 0.800 M HBr solution is titrated with 0.800 M NaOH solution. Calculate the pH of the solution after the following volumes of base have been added.
Calculate the mass, in grams for a gold sample that absorbs 225 J to change its temperature from 15 Celsius to 47 degrees celsius.
BNCT relies on the initial targeting of tumor cells by an appropriate chemical compound tagged with 10 5 B , which preferentially concentrates in tumor cells.
How much PV work is done (in kilojoules) and what is the value of deltaE (in kilojoules) for the reaction of 6.50g of acetylene at atmospheric pressure if the volume change is -2.80 L?
What volume will carbon dioxide originally 30.0 mL at 27°C have at 77°C
A piston has an external pressure of 13.00 atm. How much work has been done if the cylinder goes from a volume of 0.160 liters to 0.540 liters.
If 5.68 g of Cu was added to 3.18 g of S8, How much copper (I) sulfide would be produced?
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
A sample of laughing gas occupies 500.0Ml at a standard temperature and pressure . what volume will the gas occupy at 95.0oC and 525 torr.
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