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2 NaN3(s) → 2 Na(s) + 3 N2(g)
How many grams of NaN3 are required to produce 20.0 ft3 of nitrogen gas if the gas has a density of 1.25 g/L?
a student produces 2.73 g of a compound. She calculates the theoretical yield as 3.40 g. What is the percent yield
80.0 of is initially at room temperature (22). A chilled steel rod at 2 is placed in the water. If the final temperature of the system is 21.5, what is the mass of the steel bar?
What are the molecular weights of ether and dimethylether? Are they isomers of each other or is each an isomer of something else? Why are there significant differences in their chemical and physical properties?
Write a structural formula for two different isomers of [Co(H2O)2(en)2]Cl2. Indicate the oxidation state of the Co in each case.
Which one of the following would slow the rate of increase of atmospheric CO2? Building and operating more coal-fired power plants
What is the freezing point of a solution of ethylene glycol, a nonelectrolyte, that contains 81.0 g of (CH2OH)2 dissolved in 505 g of water?
A first-order reaction has a rate constant of 0.33 y-1. How many years does it take for the concentration of the reactant to decrease from 0.13 M to 0.088 M?
a baseball is seen to pass upward by a window 22m above the street with the vertical speed 13m/s. if the ball was thrown froom the street.
a sample of gas at 77 degreees celsius and 1.03 atm occupies a volume of 2.02L. What volume would this gas occupy at 107 degreees celcius and 0.789 atm.
A 354 gram sample of C6H12O6 has a pressure of 648 torr at 31°C. What is the volume (L) of the container?
how many grams of MgCl2 are contained in 225mL of a 0.650 M solution
The vapor pressure of a solution containing 53.6 g glycerin (C3H8O3) in 133.7 g ethanol (C2H5OH) is 113 torr at 40 degrees Celsius.
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