State which element is oxidized and which is reduced in the reaction Fe + Cl2? FeCl2
Fe is oxidized; Cl is reduced.
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One mole of an ideal gas has a volume of 0.0224 
What is the absolute temperature of the gas?
A. 273 K B. 325 K C. 346 K D. 352 K E. 376 K
Intensity: An 8.00-mW laser beam emits a cylindrical beam of single-wavelength sinusoidal light 0.600 mm in diameter. What is the maximum value of the magnetic field in the laser beam? (?0 = 8.85 × 10-12 C2/N ? m2, ?0 = 4? × 10-7 T ? m/A, c = 3.0 × 108 m/s)
A. 9.24 µT B. 17.2 µT C. 12.4 µT D. 20.5 µT E. 15.4 µT
Refer to Figure 6-11. Block A has a mass of 3.00 kg and rests on a smooth table and is connected to block B, which has a mass of 2.00 kg, after passing over an ideal pulley, as shown. Block B is released from rest. How long does it take block B to travel 80.0 cm?
A. 0.494 s B. 0.785 s C. 0.639 s D. 0.935 s E. 0.404 s
What causes the jet streams to form?
A) pressure gradients B) temperature gradients C) pressure and temperature gradients D) none of the above