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A sample of gas occupies 250. mL at 37 degrees celsius and 730. torr; what volume would the gas occupy at standard conditions?
Calculate the partial pressure of ammonia at equilibrium when a quantity of ammonium idodide in heated to 400 degree C.
Graphite is a semi-metal composed of sheets of fused benzene rings. There are no bonds between sheets, only van der Waals interactions
What is the stoichiometric relationship between IO3- and I2? b. What is the stoichiometric relationship between I2 and S2O3 2-? c.
If an automobile is able to travel 224 mi on 10.0 gal of gasoline, what is the gas mileage in km/L
Small helium-neon lasers emit 3.50 mJ/s of light at 634 nm. How many photons does such a laser emit in one minute?
Determine the osmotic pressure of a solution that contains 0.042 g of a hydrocarbon solute (molar mass = 340 g/mol) dissolved in benzene to make a 350-mL solution. The temperature is 20.0°C.
A certain reaction has an activation energy of 60.0 kj/mol and a frequency factor of A= 3.10×1012 M^-1s^-1 . What is the rate constant k , of this reaction at 30.0 Deg celsius?
If 3.30ml of vinegar needs 45.0ml of 0.130M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.10qt sample of this vinegar?
A 13-g sample of calcium reacts with bromine to form 24g of calcium bromide. How many grams of bromine are used in the reaction?
How many grams of solute are present in each of the following aqueous solutions?
How many grams of the solid can be formed from 268 g of calcium nitrate and 115 g of phosphoric acid?
For organic chemistry, what is a concerted shift? how do things like acids or heat affect them? what other factors effect them?
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