Which of the following refers to the concentration of a substance? A. the maximum amount of a solute that can be dissolved in a solvent at a given temperature

B. the minimum volume of solvent dissolved per liter of solution at a given pressure

C. the grams of solute dissolved per 100 g of solvent

D. the size of the particles that make up a substance

If element x has 99 protons how many electrons does it have

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.