can someone with this? I need someone to do the "THINK" or at least tell me what it's asking for. I Already did the questions in black. this book is from Abeka. 9th-grade science and matter.

What is the number of moles in 15.0 g ash3?

What type of reaction fuels the processes seen here?

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.