Models need to be changed when a. they are based on experimental data b. scientific understanding changes c. they represent a phenomenon d. they are designed to answer a question

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.