What is the molarity of a solution that contains 2 mol of solute in 4 L of solution?
0.5 M
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A mass is oscillating on a spring with a period of 4.60 s. At t = 0 s the mass has zero speed and is at x = 8.30 cm. What is its speed at t = 2.50 s?
A) 10.9 cm/s B) 3.06 cm/s C) 3.32 cm/s D) 1.80 cm/s E) 0 cm/s
Imagine that we place a dipole a distance r from a neutral atom, as shown below. 
A. A B. B C. C D. D E. Zero F. Other G. AA H. BB I. CC J. DD
Two Mercury years are the same length as three Mercury sidereal days
Indicate whether the statement is true or false
A particle (q = 3.0 mC, m = 20 g) has a speed of 20 m/s when it enters a region where the electric field has a constant magnitude of 80 N/C and a direction which is the same as the velocity of the particle. What is the speed of the particle 3.0 s after it enters this region?
A. 68 m/s B. 44 m/s C. 56 m/s D. 80 m/s E. 36 m/s