How does the law of conservation of matter apply to chemical equations? a. the sum of the coefficients on each side of the equation must be the same. b. the sum of the atomic masses on both sides of the equation must be the same. c. the sum of the atomic numbers on both sides of the equation must be the same. d. the total number of atoms of each element on both sides of the equation must be the same.

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

Aquarterback pedals 3.3meters southward and then run 5.7meters northward. whats the distance ? and whats the displacement?