someone help with this chemistry question Use the equation to answer the question 2NH4NO3 - - H - 0 Which numbers balance this equation? (1 point) 0 1,2,3 0 2 4 1 0 1 4 3 2.2.1

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

Which of the four hypothetical substances you investigated would be most harmful to living organisms? 50 points!