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At a certain temperature, an equilibrium mixture in a 10.0 L container was analyzed and found to contain 2.00 moles of H2, 2.00 moles of CO2, 1.00 mole of H2O, and 2.00 moles of CO. How many moles of water vapor would have to be added to the container to increase the concentration of H2 to 0.350 M when equilibrium is re-established?
Derive the activation energy for a reaction that proceeds 2 times faster when the temperature is raised from 20 C to 30 C.
When the two cylinders are connected and the gases mixed, the pressure in each cylinder becomes 8.71 atm. What is the volume of cylinder B?
Each uranium atom that decays eventually results in the formation of one lead atom. Assuming that the rock did not contain any lead-206 atoms originally, find the age of the rock when the ratio of uranium to lead atoms is 8 to 1.
Suppose that the microwave radiation has a wavelength of 12.4 . How many photons are required to heat 215 of coffee from 25.0 to 62.0 ? Assume that the coffee has the same density, 0.997 , and specific heat capacity, 4.184 , as water over this tem..
Explain why the colour of the light emitted by an element in the gaseous state is characteristic of the element & explain with a sketch diagram how a hydrogen atom, which has only one electron, has so many spectral lines.
What weight of Pb(NO2)2 wil have to be dissolved in one liter of water to prepare a 100ppm Pb2+ solution.
write a symbol for each of the following: a)proton b)gamma ray c)positron d)barium-131 e)palladium-103
A sample of concrete contains cement, gravel, crushed rocks, sand, and water. Each of these contains different metals and minerals and hence has different colors and different properties. Which term or terms could be used to describe this sample o..
suppose sulfur dioxide reacts with oxygen at 25 degrees celsius.2so2 g o2 g -gt lt- 2so3 gthe equilibrium constant kc
What is a specific example that exists for each of these chemical reaction types above and why might it be of importance to healthcare professionals?
the temperature of the ideal gas in the container shown is 300 k. the gas occupies a volume of 1.27 m3. what would be
What is the density of a substance if a 2.50mL sample has a mass of 0.880g at room temperature? ( show calculations) What is the specific gravity of the substance?
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