What ratio of nitrogen and hydrogen molecules would result in no left-over reactants? explain your answer.

How is the composition of a meteorite relevant to finding out the composition of earth's core?

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.

Which statement best explains the relationship between an area is geography and the temperature of its surface water