2HCl + MgS → H2S + MgCl2 If you start with 2 moles of HCl and 1.2 moles of MgS, how many moles of H2S can form?

What is the limited reactant?
What is the excess reactant?
How much product will form?
How much of the excess reactant will remain?

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.