Write the possible oxidation and reduction half-reactions that occur when magnesium is immersed in each of the following solutions: (i) hcl, (ii) an hcl solution containing dissolved oxygen, and (iii) an hcl solution containing dissolved oxygen and fe2+ ions.

Why should the scientific method be used to answer a question? a. it provides a way to test an idea without any bias. b. it provides a way to test a hypothesis. c. it provides a way to ensure all hypotheses are proven correct. d. it provides a way to quickly turn a hypothesis into a scientific theory.

How many molecules of sucrose c12h22o11 are there in 454 grams of sucrose

An exothermic reaction is conducted in an insulated calorimeter filled with water. the calorimeter is then sealed so that there is no heat exchanged between the contents of the container and the surrounding air. which of the following statements is true about the reaction?