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Arrange the following gaseous substances in order of decreasing root mean square velocity at 25°C. argon, fluorine, carbon dioxide, oxygen, helium A. carbon dioxide > fluorine > argon > oxygen > helium B. carbon dioxide > argon > fluorine > oxygen > helium C. argon > oxygen > helium > carbon dioxide > fluorine D. helium > oxygen > fluorine > carbon dioxide > argon E. helium > oxygen > fluorine > argon > carbon dioxide
A 90.0 g piece of hot iron is placed in a calorimeter containing 125 mL water at 19.8 degrees celcius. If the final temperature of both the water and the iron is 24.6 degrees celcius, what is the initial temperature of the hot iron?
A 578 mL sample of hydrogen gas was collected over water at 25°C and a pressure of 783 torr. If the pressure of water vapor is 24.0 torr at 25.0°C, what mass of hydrogen gas (g) was collected?
A laser pulse with wavelength 540nm contains 4.40mJ of energy. How many photons are in the laser pulse?
What is a possible molecular formula of the hydrocarbon?
Write the balanced equation for the following reactions. Use only the following descriptions: neutralization, precipitation, gaseous, combustion, synthesis, single displacement or decomposition
The potential energy associated with being a given height above the Earth%u2019s surface is mgh. Using this definition of potential energy, determine the ratio for the pressure at height h (Ph) to the pressure at height h = 0 (P0).
Helium= ? g/mL Neon= ? g/mL Carbon monoxide= ? g/mL Nitrogen monoxide= ? g/mL If the density of air at 25 degrees C and 1.00 atm is 0.00117 g/mL, will any of the balloons float in this air? Which ones?
Displays the volume and pH at which equivalence was reached and plots this point on the graph and validates the code by plotting the midpoint using both methods and displaying the volume and pH for both methods in the Command Window.
Just based on the orbital occupancy of electrons, is it justifiable to distinguish between the transition and inner transition elements? Should we consider any other factors?
A sample of gas has an initial volume of 3.0 L at a pressure of 747 mmHg,If the volume of the gas is increased to 3.4 L , what will the pressure be?
Describe the process of obrital hybridization as applied to carbon. You must include information on obritals used and produced
What is the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2? The Ka for acetic acid is 1.8 x 10-5.
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