What are scientific models used for? Give an example of each of the following types of models: Idea, Physical, Compute

The force between two objects, each of charge - Q is measured as + F when the objects are separated a distance 2d apart. If the charge on only one object is tripled, determine the new force between them:

Is symbiosis a behavior that exists strictly between two different animal species?

What does the letter R symbolize in a structural formula, such as RCOOH?

A gas sample has an initial pressure of 547 mmHg and initial volume of 0.500 L. Pressure (in atm) when the volume of the sample is decreased to 225 mL?

What happens to the temperature of a substance during a phase change? A. It increases rapidly as energy is added. B. It increases slowly as energy is added. C. It stays the same as energy is added. O D. It decreases as energy is added.

What is the molecular structure of water?

Which of the following is a physical change? A. magnetzing an iron rod B. roasting marshmallows on a campfire c. milk souring D. an antacid neutralizing stomach acid

Which of the following objects would require the use of a large-scale model? An atom A car engine A frog's heart The Mississippi River

What is the empirical formula for C5H1102? * A. C10H2202 B. C5H110 C. C5H1102 D. C2H110

How is the energy level of an atom's valence electrons related to the period in the periodic table?