a compound has an empirical formula of NaO and a molar mass of 78g/mol. what is its molecular formula

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.

All motion is caused by force? true or false

Which change to the system wood cause the freely-moving piston to lower?