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Question: Consider the following table of measurements of pressure vs. volume for air in a closed volume at room temperature,
Pressure Volume (kPa) (cm3)
90.9 24.89
73.6 30.73
59.5 37.93
a. Show that these data obey Boyle's law.
b. How many molecules are there in this volume? Show how you got your answer.
c. What is the rms velocity of the oxygen molecules in this sample of air? Explain how you got your answer.
d. If the temperature is increased by 15%, by how much does the rms velocity of the oxygen molecules change? Explain.
The atoms in Barium metal are arranged in a body-centered cubic unit cell. Calculate the radius of a Barium atom if the density of barium is 3.5 g/cm3
In another experiment it is found that 0.103 g of the compound produces 0.0460 g of NH3. What is the empirical formula of the compound
A 21.8 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter, according to the following reaction. If the temperature rises from 25.0°C to 62.3°C, determine the heat capacity of the calorimeter. The molar mass of ethanol is 46.07 g/mol.
Acid HA has a pKa = 20; acid HB has pKa = 10 Will an acid-base reaction with an equilibrium lying to the right take place if Na+A- is added to HB
This reaction is shown below. You measured out 7.14 mL of oil of wintergreen and 9.59 g of sodium hydroxide (FW = 39.997 g/mol). Experimentally, you produced 6.48 g of salicylic acid. What is your percent yield for this reaction?
If you pipetted 50.00mL sample of an unknown brime and titrated it with 37.64mL of 0.1024M of silver nitrate solution. Calculate the ppm of sait (NaCl) in the sample.
What is the half-life of a second-order reaction in which 45.0% of the original concentration of 1.00 M remains after 325 seconds?
Sulfur, S8, combines with oxygen at elevated temperatures to form sulfur dioxide. If 288 oxygen molecules are used up in this reaction, how many sulfur molecules reacted. In the reaction above, how many molecules of sulfur dioxide were formed
the given data of pyroxene analysis is given w. sio248.90 tio2.12 al2o33.86 fe2o34.65 cr2o30 feo25.35 mno.51 mgo6.87
Prepare a table that reports expected values of enzyme velocity (v) at the following substrate concentrations ([s]): 1, 2, 6, 10, 20, 40, 60, 100, 500, 1000, 2400, 5000 (all values are in µM).
Volume of 18.0 M sulfuric acid that must be added to water to prepare 2.00 L of a .309 M solution then compute the molarity of the solution obtained by diluting 80.6mL of .225 M ammonium chloride to .250 L will rate all answers and give lifesaver
3 tons of ethanol are accidentally discharged into a lake. By how much is the biological oxygen demand of this water increased? Assume that all ethanol is transformed into CO2 and assume the lake contains 108 liters of water.
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