Which of the following are single-displacement reactions?
~there can be more then one answer~

a. zn (s) + h2so4 (aq) → znso4 (aq) + h2 (g)
b. 2al (s) + 3cucl2 (aq) → 2alcl3 (aq) + 3cu (s)
c. agno3 (aq) + nacl (aq) → agcl (s) + nano3 (aq)
d. 2fe(s) + 6hci (g) → 2fecl3 (s) + 3h2 (g)

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative

You throw a baseball directly upward at time =0 at an initial speed of 14.9 m/s. what is the maximum height the ball reaches above where it leaves your hand? ignore air resistance and take =9.80 m/s2.

Aforce of 8,480 n is applied to a cart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart?