How is the number 7.89 x 10^3 expressed in regular numerals?
7,890
78,900
6789

Which statement describes evidence of a chemical reaction? a) ice melting eliminate b) water boiling c) lighting a match d) grape juice freezing

Select the correct answer how does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? ca the value of is negative the value of qis positive the value of a remains constant the value of a decreases the value of equals zero e

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.