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A student measure the volume of a given amount of air in a capped-off syringe as 5 mL at room temperature. The student also measured the volume of air in the syringe in an ice-water bath and a hotwater bath. Which of the following statement would summarize the results?
A. The volume decreased in the ice-water bath and inceased in the hot water bath relative to the volume at room temperature.
B. The volume was constant in all three conditions.
C. The volume decreased in the ice-water bath but did not change in the hot water bath relative to the volume at room temperature.
D. The volume increased in the ice-water bath and decreased in the hot water bath relative to the volume at room temperature.
Calculate the number of theoretical plates N in the column of length L in 20 cycles. The observed resolution is 1.81. B) Now, calculate the plate height in the column in m.
What is the wavelength of a photon (in nm) of light emitted resulting from an electron in a hydrogen atomundergoing a transition from a n=5 to and n=1 electronic orbital
A 9-mm Xian short-barrel experimental pistol is fired and the reacting, exploding gases push the bullet down the barrel of the gun. The pressure is recorded as the bullet accelerates to the exit.
an old container of koh has been found in the chemistry lab. a 4.00 g sample of this impure koh is dissolved in 30.0
Problem- Given a vapor pressure of toluene of 21 mm Hg, at 760 mm Hg, what is the equilibrium concentration for toluene
Write a paper on an article and it shows many different compounds and need a better understanding of where each originated and what steps were made in their synthesis.
We most often express heat as kilocalories and kilojoules rather then calories and joules. When 1 pound of fat is burned in the body,9.4 kilocalories of energy is produced. Express that as a) calories b)kilojoules
Two liquids, A and B, show partial miscibility below 52.4 C. The critical concentration at the upper critical temperature is x=0.459, where x is the mole fraction of A. At 40.0 C the two solutions in the equilibrium have x=0.22 and x=0.60, respect..
If a solution is made by adding 83 grams of sodium hyroxide to 750 ml of water what is the percent by mass of sodium hydroxide in this solutions ?
95.0mL of rm H_2O is initially at room temperature (22.0rm{} ^{circ}C). A chilled steel rod at 2.0rm ^{circ}C is placed in the water. If the final temperature of the system is 21.4^{circ}C.
Butane is normally supplied in metal containers under pressure, as a mixture of liquid and gas, so high temperatures may cause the container to explode. At 25.0 ºC, the vapor pressure of butane is 2.3 atm. What is the pressure in the container at ..
What are some of the general properties that distinguish metals
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