The answer is; 2.
To balance a chemical equation, the moles on one side of the equation has to be the same as that on the other side. This ensures that the law of conservation is observed because matter or energy can't be created or destroyed but can only be transformed from one form to another.
In this equation, putting 2 in front of NaCl ensures that there are 2 moles of Na and CL just as there are 2 moles of Na and CL in the reactants side.
Answer:
A. the tendency of moving objects to stay in motion
Explanation:
just did it on ap3x
Answer:
Joule (J)
Explanation:
Joule (J) is the SI unit of heat energy (any energy - thermal, electrical, mechanical..). It is named after the English physicist James Prescott Joule.
Answer:
frictional force causes an object to slow down
The brake rotor spins along with the wheel and the stationary brake caliper wraps around the rotor and works through a piston system as to when the brake is applied it pushes brake fluid into the calipers pistons (which is attached to the brake pads) therfore the brake pads are pressed onto the rotating brake rotor thus creating friction gradually or abruptly slowing it down depending on how hard the brake is applied.