Which of the following is an example of combustion? A. aluminum + cobalt chloride -> aluminum chloride + cobalt
B. hexane + oxygen -> carbon dioxide + water
C. sodium cyanide + hydrochloric acid -> sodium sulfate + hydrogen cyanide
D. potassium chlorate -> potassium chloride + oxygen

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;