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The reaction below is second-order in [NO2] with a rate constant of .255 M^-1s^-1. If the concentration of NO2 is .00556 M at the beginning of the reaction, what will [No2] be after 300 secondd? NO2 (g) arrow NO (g) + O (g)
How many grams of ethylene glycol C2H6O2 must be added to 1.15kg of water to produce a solution that freezes at -3.68 degrees celsius?
The heat capacity of bomb calorimeters are determined by running a known, standard reaction. The combustion of 2.450 mmol of x caused the temperature of a bomb calorimeter to rise from 23.400
a 5.00 gram sample of potassium chlorate/potassium chloride mixture was heated in a test tube. A total of 1.00 L of oxygen gas was collected over water at 25 degrees c and 741 torr. determine the percentage of potassium chlorate in the mixture.
The total molarity of acid and conjugate base in this buffer is .100 M. A student adds 7.10 mL of a .250 M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760
How many Joules of energy are stored in 1 pound (454 g) of sucrose? (Assume: Pressure = 1 atm, Temperature = 25°C; the respective ?Hf° for the reactants and products can be found in the thermodynamic table linked above. Show your calculation
What percentage of a serving of this sandwich did Michael burn during his winning time of 1 minute 54 seconds in the 200-meter individual medley relay race?
What is the wavelength of an electron traveling with a velocity of 7.0 times 10 to the 3rd power?
a sample of hydrogen gas initially at 29C and 7.0 L iscooled until its final volume is 2.9 L. What is its final temperature
A sample of gas with a volume of 750 mL exerts a pressure of 98 kPa at 30 ?C.What pressure will the sample exert when it is compressed to 250 mL and cooled to -25 ?C?
A major component of gasoline is octane (C8H18) . When octane is burned in air, it chemically reacts with oxygen gas (O2) to produce carbon dioxide (CO2) and water (H2O).
On the coldest day of last year, what was the temperature at the bottom of Lake Michigan? explain your answer in terms of the density of water.
What is the expected freezing point of a solution of 110.5 g of H2SO4 in 225 g of water? Assume sulfuric acid completely dissociates in water.
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