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The rate law for the reaction below is given by Rate = k(PPH3). At 680°C, the half-life is 35.0 s. Given initial pressures of PPH3 = 0.67 atm, PP4 = 0.25 atm, and PH2 = 0.75 atm, how many seconds will it take for the pressure of PPH3 to drop to 0.50 atm?
4 PH3(g) → P4(g) + 6 H2(g)
A of 0.107 kg · m2 about its axis of rotation. A 33.5 g piece of clay is thrown at the vane and sticks to it at a point 18.5 cm from the axis. The initial velocity of the clay is 20.5 m/s, directed perpendicular to the vane.
Write a short note on the topic State and explain Ohm’s law.
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Two ice-skaters, whose masses are 45 kg and 75 kg, holdhands and rotate about a vertical axis that passes between them,making one revolution in 2 s. Find the angular momentum of the system about their center of mass
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