Which of the following procedures does not increase the rate at which a sugar cube dissolves in water? Select one:
a. Grinding the cube.
b. Freezing the solvent.
c. Heating the solvent.
d. Stirring the mixture.

Based on the equation and the information in the table, what is the enthalpy of the reaction?

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness