Which of these accurately describe the products of a reaction a. substances that are used in a reaction b. new substances that are present at the end of a reaction c. substances that do not participate in a reaction d. substances that we’re not used up in a reaction

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

Which statement can best be concluded from the ideal gas law?

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.