What data should be plotted to show that experimental concentration data fits a first-order reaction? g?

Clouds form when water vapor to form small droplets. a. humidifies b. condenses c. evaporates d. precipitates

Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures