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Baseball reporters say that long fly balls that would have carried for home runs in July "die" in the cool air of October and are caught. The idea behind this observation is that a baseball carries better when the air is less dense. Dry air is a mixture of gases with an effective molar mass of 29.0g/mol
(a) Compute the density of dry air on a July day when the temperature is 308.15K and the pressure is 1.00atm
(b) suppose that the humidity on the July day is 100%; thus, tha air is saturated with water vapor.
Is the density of this hot, moist air less than, equal to, or greater than the density of the hot, dry air computed in part (a)? In other terms, does high humidity favor the home run?
Identify the type of interactions involved in each of the following processes taking place during the dissolution of sodium chloride (NaCl) in water.
Describe how and why the ferric chloride test can be used to detect whether your reaction has gone to completion.
What would be the product of triphenylbromomethane with water if it was reacted in acetone/methanol
When the titration reaches the equivalence point, the student finds she has used 91.4 mL of sodium hydroxide solution. Calculate the molarity of the student's sodium hydroxide solution.
Suppose four weighings of a crcucible were found to be 10.231 g, 10.278 g, 10.256 g, and 10.363. Obtain the average (mean) weight of the crucible
Solid soduim reacts violently with water producing heat hydrogen and sodium hydroxide. How many moeclues of hydrogen gas are formed when 48.7 g of sodium are added to water.
the 20 ml of water added to the erlenmeyer flask is to be previously boiled deionized water. Since water does absorb CO2 from the atmosphere and since CO2 dissolved in the water causes it to be slightly acidic
Calculate the pH of a solution resulting from the addition of 10.0 mL of 0.10 M NaOH to 50.0 mL of 0.10 M benzoic acid (Ka = 6.5 x 10-5)
If 13.93 mL of NaOH solution is required to reach the stoichiometric point, what is the molar concentration of the sodium hydroxide solution?
-Calculate the number of mmol of Br2 present in 0.48mL of bromine solution, -Calculate the number of mmol in 100 mg of trans-cinnamic acid (use a MW calculated to 2 decimal places)
find the number of representative particles in each substance a)3.00 mol Sn b)0.400 mol KCI c)7.50 mol SO2 d)4.80x103 mol NaI
Predict the normal boiling point of pure B (in degrees Celcius) given that deltaHvaporization(Pure B)=67.9kJ/mol.
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