During the combustion of ethylene gas, C 2H 4, carbon dioxide is produced and the rate of disappearance of O 2 is 0.13 M s -1. What is the rate of appearance (M s -1) of CO 2

Which statement best describes how atoms combine to form sodium chloride (nacl)? a. a positively charged sodium ion and a positively charged chlorine ion form an covalent bond. b. a positively charged sodium ion and a negatively charged chlorine ion form an covalent bond. c. a positively charged sodium ion and a positively charged chlorine ion form an ionic bond. d. a positively charged sodium ion and a negatively charged chlorine ion form an ionic bond.

Which statement accurately describes the relationship between air pressure, air density, or altitude? as altitude increases, pressure increases. as altitude increases, air density increases. air pressure and density are lowest at sea level. denser air exerts more pressure than less dense air.

If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a