The decomposition of calcium carbonate, CaCO3(s) > CaO(s)+CO2(g), has the following values for free energy and enthalpy at 25.0°C /\G=130.5 kJ/mol
/\H=178.3 kJ/mol

What is the entropy of the reaction?
Use /\G=/\H-T/\S

A. -160.3J/(mol. K)
B. -47.8J/(mol. k)
C. 160.3 J/(mol. k
D. 1912 j/(mol. k

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?

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.

Hno2 + caco3 = h2co3 + ca(no2) can someone balance this