What weighs more a mole of feathers or bricks?

In this experiment, you will use a track, a toy car, and some washers to explore newton’s first two laws of motion. you will make observations and collect data regarding the motion of these objects. in the space below, write a general scientific question that you will answer by doing this experiment.

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

Explain what happens at the saturation point when adding salt to water at room temperature.