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Which of the following types of radiation is composed of particles with a charge and mass identical to that of an electron?
1. beta particles2. gamma radiation3. alpha particles4. X-rays
Methane and hydrogen sulfide form when 36g H2 texts with carbon disulfide. Calculate the percent yield if the actual yield of CH4 is 69.8g.
A solution made by dissolving 1.20 g of the unknown compound in 25.0 g of benzene had a freezing point of 4.7 degrees Celsius
the ostwald process converts ammonia (NH3) to nitric oxide (NO) by reaction with oxygen in the presence of a catalyst at high temperatures.
If you used 8400 kilojoules you expend in energy in one day to heat 50,000 g of water to 20 degrees C, what would be the irse in temperature? What would be the new temperature of the water?
a solution is prepared by dissolving 20.0 g of NaI in enoug water tomake 300.mL of solution How many moles of ions are in 25.mL of thesolution?
how much energy is needed to heat 24.8g water from 64 degrees to 123 degrees celsius?
Ammonia reacts with oxygen according tot he following equation: 4NH3+5O2=4NO+6H2O deltaHrxn = -906kJ Calculate the heat (in kJ) associated with the complete reaction of 155g of NH3.
what is the volume in milliliters of 20.0 g of acetone if the density of acetone is .791 g/ml?
A .750 L volume of gas at 308.0 torr and 51.00 degrees C is heated until the volume of the gas is 2.000L at a pressure of 718 torr. What is Tfinal of the gas?
It is often necessary to do calculations using scientific notation when working chemistry problems. For practice, perform each of the following calculations
Determine the molar mass of the nonelectrolyte if the osmotic pressure of the solution = 23.6 atm, also express your answerin g/mol?
I dissolved .5 grams of mustard in 3 mL of distilled water. I was asked to determine the mass percentage of acetic acid in mustard, so I added 2.5 mL of NaOH to turn the mustard solution red.
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