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A weather balloon is inflated to a volume of 26.5 L at a pressure of 748 mmHg and a temperature of 32.3 °C. The balloon rises in the atmosphere to an altitude where the pressure is 360. mmHg and the temperature is -14.6 °C.
Assuming the balloon can freely expand, calculate the volume of the balloon at this altitude.
The mass of a golf ball is 45.9 g. If it leaves the tee with a speed of 61.0 m/s, what is its corresponding wavelength?
A sealed tube contains 1.66 atm PCl5 at 500 K. The PCl5 decomposes until equilibrium is established. The equilibrium pressure in the tube is 2.28 atm. Calculate Kp for this equilibrium.
what the information about newly discovered virus that we should know before we could devolope an effective drug therapy
How many grams of dry NH4Cl need to be added to 2.40L of a 0.400M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.91? Kb for ammonia is 1.8X10^-5.
Compare and contrast solid-phase DNA synthesis with enzyme-catalyzed DNA synthesis. Please separately describe the similarities and differences between the two.
A stock solution is prepared by adding 35 mL of 1.5 M NaNO2 to enough water to make 49 mL. How many moles of NO2- are in 30 mL of the stock solution
A rectangular block has dimensions 2.9 cm 4.0 cm 10.0 cm. The mass of the block is 625.0 g. What is the volume of the block?
Write a chemical equation for HF(aq) showing how it is an acid or a base according to the Arrhenius definition. Write a chemical equation for Ba(OH)2(aq) showing how it is an acid or a base according to the Arrhenius definition
Calculate Qsp for calcium fluoride (Ksp=3.9x10^-11) when 195.0 mL of a 0.00780 M solution of Ca(NO3)2 is added to 175.0 mL of a 0.00740 M solution of KF
What is the theoretical yield of vanadium that can be produced by the reaction of 40.0 g of V2O5 with 40.0 g of calcium based on the following chemical reaction.
For the equalibrium PCl5(g) PCl3(g) + Cl2(g), Kc= 2.0 x 10^1 at240 celcius. If pure PCl5 is placed in a 1.00-l container and allowed to come to equalibrium, and the equalibrium concentration of PCl3(g) is 0.23 M, what is the equalibrium concentr..
Describe Newman projection. Experiments have shown that for 1,2-dichloroethane, ClCH2CH2Cl, in carbon tetrachloride solution at 25C, 70% of the molecules are in the anti and 30% are in the gauche conformation
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