Please help fast! When crystalline ammonium nitrate is dissolved in water the solution becomes very cold and the temperature of the solutions drops be about 20C. What are the signs of △H, △S , and △G for this reaction?

When a scientific theory has been tested and proved by the scientific community, it becomes a law

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?