Compound x has the molecular formula c3h6, and compound y has the molecular formula c6h12. how are the two compounds related? a. they are made of the same elements, but are different compounds b. they are identical compounds expressed in different ways. c. they are different compounds, but made from the same molecule.

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

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.

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.