Which of the following indicates that a chemical reaction system has reached equilibrium? a)the temperature of the system is increasing.

b)the concentration of reactants is decreasing.

c)the temperature of the system is decreasing.

d)the concentration of products is constant

the volume of the system is changing.

If a substance is not at its melting or boiling point, as the heat content of a sample of matter increases, its temperature increases the number of intermolecular bonds decreases the space between particles increases the particles move faster

**40** points asapessay questions (10 points possible) clear image of next, create your own scenario. it can be one of your own real experiences or one you make up. use imagery in your writing to give your instructor a the setting and an action taking pace in your writing explain the structure and functions of the skin at work in your scenario. !

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide