Which equation is used to calculate the free energy change of a reaction?
O A. AG° = T AH° + AS°
O B. AG° =TAH°AS°
O c. AGO - AH°,
LE
Aso - I
O D. AG° = AH° – TAS
BE

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.

Select the correct answer. wax is a nonpolar substance. in which type of substance is it the most soluble?