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in an experiment on gases, you are studying a 1.00-L sample of hydrogen gas at 20C and 2.40atm. You heat the gas until the root mean square speed of the molecules of the sample has been doubled. What will be the final pressure of the gas
A 20-g mass of argon occupies 15.0 l at a pressure of 25 kpa . find the volume of the argon when the pressure is increased to 530 kpa.
Which of the following buffer systems would be the best choice to create a buffer with the pH= 9.00? For the best system , calculate the ratio of the masses of the buffer components required to make the buffer.
25.0 ml of 0.212 M NaOH ia neutralized by 13.6 ml of an HCl solution. The molarity of the NAOH solution is?
The density of H2O2 is 1.463g/ml and the density of O2 is 1.428 g/l. How many liters of O2 will from 55.0mL of H2O2?
Draw the product of the aldol-dehydration reaction with diethylketone and p-tolualdehyde
what is the maximum [ATP]/[ADP][Pi] ratio compatible with ATP synthesis assuming that the number of protons trans-located per ATP formed is 2, the temperature is 25C and the change of pH is 0.75?
Consider the reaction: 2 K(s) + 2 H2O(l) -> 2 KOH(aq) + H2(g), DH = ? The heat released when 24.9g of K reacts with excess water is 124 kJ. Determine the enthalpy change, DH, for the above equation as written
A helium-filled balloon has a volume of 2.75 L at 17 C. The volume of the balloon decreases to 2.36 L after it is placed outside on a cold day. What is the outside temperature in K?
If a sample of sodium is dropped into a container of water the reaction is:
what is the change in temperature of the water after the ice has completely melted? The enthalpy of fusion of water is 6.02 kJ/mol, and the specific heat capacity of the liquid is 4.184 J/g/K. Assume that the amount of extra water produced by the ..
how many kilojoules and kilocalories of heat are required to raise 40.0 g of water from -12 degrees Celsius to 130 degrees Celsius?
Determine the volume of 0.220 M KOH solution required to neutralize each of the following samples of sulfuric acid. The neutralization reaction is:
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