Please HELP ME Limiting Reactant

Silver reacts with Nitric Acid to produce Silver (I) Nitrate, water and Nitrogen Dioxide
50 grams of each reactant. Which is LR? How many grams of each product would be formed?

What type of matter is made of only one kind of atom

At 20°c, a sample of h2o liquid and a sample of co2 gas each have the same average kinetic energy. why is one a liquid and the other a gas at this temperature?

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.