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Question: a. If 1 liter of oxygen gas at 0 ?C and 101kPa pressure contains 2.7× 1022 molecules, how many molecules are in 1 liter of hydrogen gas at the same temperature and pressure? How do you know?
b. If at room temperature the average kinetic energy of an oxygen molecule (MO2 = 32) is 0.04eV, what is the average kinetic energy of a hydrogen molecule at the same temperature? Why?
c. When hydrogen and oxygen gas combine to form water, about 2.5eV of energy is released as each water molecule forms. Assume that the hydrogen and oxygen combine inside a closed tank and that 10% of the released energy goes into kinetic energy of the molecules. Estimate the rise in temperature of the water vapor.
What is the pH of the solution obtained when 135 mL of 0.618 M NaOH is diluted to 16.0 L with water?
When filling a cuvette with distilled water and measuring it with a spectrofluorometer, upon excitation at 350nm, a band around 397nm appears. This is either a fluorescence band or a Raman band. Suggest what you can do experimentally to identify w..
A gas cylinder at a pressure of 5.80 atm contains both helium and oxygen. The helium is at a pressure of 2.35 atm. What is partial pressure of oxygen?
A vessel containing 45.0 cm3 of helium gas at 25°C and 106 kPa was inverted and placed in cold ethanol. As the gas contracted, ethanol was forced into the vessel to maintain the same pressure of helium.
Determine the amount of heat energy is needed to raise the temperature of 0.362 kilograms of Cu from 23. Degree Celsius to 60 degree Celsius?
Find out the formula of the gas produced if Na 3 P(s) sodium phosphide, is reacted with H 2 O
Important information about Organic Chemistry, The most reasonable formula for a compound demonstrating M+ =101 with a minor M+1 peak is
Radiation can be found in different forms. Electromagnetic radiation is something that we use every day. Ionizing radiation can cause damage to living tissue. Take a look around you. Describe an example of a way in which you are impacted by radiat..
Describe the type of bonding that your unknown has (covalent, polar covalent). Locate and show any dipoles in your compound
in a test on the vaporization of water into air in a wetted-wall column the following data were obtained tube diameter
Calculate the percent ionization and hydrogen ion concentration in a solution containing 0.05 M hypochiorous acid (HOCI), which has an ionization constant at 25°C of 2.9 x 10-8.
The following mechanism has been proposed for the gas-phase reaction of chloroform (CHCl3) and chlorine: 1) Cl2 ? 2 Cl (fast, reversible) 2) Cl + CHCl3 ? HCl + CCl3 (slow) 3) Cl + CCl3 ? CCl4 (fast) What rate law does this mechanism predict
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