chemistry
a 2.50mL sample of dry air in a cylinder exerts a pressure of3.00atm at room temperature. without changing the temperature, a piston is moved until the pressure in the cylinder is reduced to 1.00atm. what is the final volume of the gas?
chemistry
a 2.50mL sample of dry air in a cylinder exerts a pressure of3.00atm at room temperature. without changing the temperature, a piston is moved until the pressure in the cylinder is reduced to 1.00atm. what is the final volume of the gas?
physics
a man stands on the roof of a building that is 30m tall and throws a rock with a velocity of magnitude of 40m/s at an angle of 33 degress a bove the horizontal. Calculate the following: a.) The maximum height above the roof reached by the rock. b.) The magnitude of the velocit...
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the sum of the first 10 terms of the geometric sequence.
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My answer is 12276, is this correct?
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The 1st, 5th and 13th terms of an arithmetic sequence are the first three terms of a geometric sequence with a common ratio 2. If the 21st term of the arithmetic sequence is 72, calculate the sum of the first 10 terms of the geometric sequence.
Chem. theromodynamics
if you start with 300g of lead acetate in 850ml of water what is the Pb^2+ concentration at a pH of 4.8?
phys1
A carnival swing is fixed on the end of an 7.6-m-long beam. If the swing and beam sweep through an angle of 130°, what is the distance through which the riders move?
physics14
In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.2 multiplied by 10-17 N during the first 2.2 cm of the tube's length; then they move at essentially constant velocity another 43 cm before hitting the screen. (a) Find th...
Calculus
On what interval is the function f(x)=x^2-6x+8 is increasing?
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