When determining the mass of product used or reactant consumed, the number of moles must be determined before comparing two substances because Question 10 options: A) atoms have the same mass but moles are different for each substance. B) masses are the same for different substances. C) different substances have different masses due to their atomic make-up. D) moles react.

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.