which heat value is defined as the difference between the potential energy of the products and the potential energy of the reactants during a chemical change

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

Covalent compounds: mastery test select the correct answer what is formed when atoms join together with a covalent bond? a. an ion b. a molecule c. a neutral atom d. a noble gas

Which order shows the levels of organization from largest to smallest? organism, organ system, cell, organ, tissue organism, tissue, organ system, organ, cell organism, organ, organ system, cell, tissue organism, organ system, organ, tissue, cell