Will mark brainliest! how is the atomic mass unit (amu) defined? a) 1/14 the mass of a nitrogen-14 atom b) 1/13 the mass of a carbon-13 atom c) 1/16 the mass of an oxygen-16 atom d) 1/12 the mass of a carbon-12 atom

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

Amixture that has two or more substances that are spread out evenly is called a. compound b. heterogeneous c. substance d. homogeneous

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.