Explain the energy transformation occurring in the image and how the law of conservation of energy is demonstrated here.

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?

Displacement is the slope of a velocity vs. time graph a. true b. false