Answer:
c. it involves a series of steps, each of which generates a reactive intermediate that brings about the next step
Explanation:
A chain reaction consist of many repeating steps. Chain reaction will never stop until all the reactant has been exhausted. It is more of a cycle of reaction that generate a reactive intermediate that brings about the next step.
Example of a chain reaction is the chlorination of methane.
CH4 + Cl2 ↔ CH3Cl + HCl
CH3Cl + Cl2 ↔ CH2Cl2 + HCl
CH2Cl2 + Cl2 ↔ CHCl3 + HCl
CHCl3 + Cl2 ↔ CCl4 + HCl
Which device is designed to produce mechanical energy?
Well, mechanical energy is the sum of potential and kinetic energy. Kinetic energy is a unit of energy in which is the reason why an object does movement, while potential energy is another unit of energy in which is the reason why an object doesn't move, or stops. While you can stop a fan or a lamp, it isn't automatic. It's manually. So the answer is (4) an oven because mechanical energy happens automatically, not manually, or for a greater reason.
Answer:
the correct answer is four decimal places
Best Answer
1 mole of a substance contains 6.022x10^23 "units" of that substance.
So 0.187 mol of Na+ is 1.13x10^23 ions (6.022x10^23 x 0.187).
How am I supposed to help you if there's not picture of what the problem is