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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Two Mercury years are the same length as three Mercury sidereal days
Indicate whether the statement is true or false
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
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
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