What is the mass of helium present
A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273K to 373K. If 20J of work is done by the gas during this process, what is the mass of helium present?
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In a standard clover-leaf interchange, there are four ramps for making right-hand turns, and inside these four ramps, there are four more ramps for making left-hand turns. Your car approaches the interchange from the south
Two identical 25 g particles each carry 2.0 uC (micro Coulomb's) of charge. One is held fixed, and the other is placed 1.0 mm away and released. Find the speed of the moving charge when it's 1.0 cm from the fixed charge.
If one-third the resulting carbon dioxide remained in the atmosphere, what would be the annual rate of increase in atmospheric carbon dioxide around the year 2020? Assume that the fuels are 75% carbon by mass.
The acid equilibrim constant (k) for benzoic acid is 6.46 X 10 ^5. Note that this calculatio doesn't account for the benzoic acid that has precipitated from solution, but you can assume that the higher the ration, the more benzoic acid will precip
Suppose you have two 100mL graduated cylinders. In each cylinder there is 40.0mL of water. You also have two cubes: One is lead, and the other is aluminum. Each cube measures 2.0cm on each isde.
What is the probability that the Herbal Tea Project does well? What is the probability that both projects do well? What is implied about these projects?
Both fields point in the same direction. A positive 1.8-µC charge moves at a speed of 2.50 x 106 m/s in a direction that is perpendicular to both fields. Determine the magnitude of the net force that acts on the charge.
A small mailbag is released from a helicopter that is descending steadily at 3.00 m/s.
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