Following are the laws of thermodynamics, with suitable example.
1st Law of thermodynamics:
1st law of thermodynamics deals with conservation of energy. It is stated as '<span> energy cannot be created or destroyed in an isolated system'. According to this law, total energy of universe remains constant. Energy just gets converted from one form to another. For example, in case of burning of cracker, chemical energy stored in cracker is converted into heat, light and sound energy.
2nd Law of thermodynamics:
2nd law of thermodynamics deals with entropy change associated with system. It is stated as '</span><span> entropy of any isolated system always increases'. According to this law, the system tries to maximize entropy. System with higher entropy is more stable than system with lower entropy. For instance, at room temperature, ice melts into water, because water has higher entropy than ice. It may be noted that entropy is measure of disorder in system. Thus, higher the disorder in system, greater is the entropy.
3rd Law of thermodynamics:
3rd law of thermodynamics also deal with entropy change in system. According to this law, </span><span>entropy of a system approaches a constant value as the temperature approaches absolute zero. This means that, as the temperature decreases, randomness in system decreases and finally at 0K, system is in highly order state, hence ideally system must have zero entropy. However, there is always some residual entropy present in system even at 0K, due structural orientation of molecules. </span>
This uses something called <span>Le Chatelier's principle. It states essentially that any stress put upon a system will be corrected.
In more simple terms, it means that in an equilibrium, such as the equation N2(g) + 3H2(g) <=> 2NH3(g), removing a reactant will cause the system to create more of said reactant to compensate for its loss, or adding excess reactant will cause the system to remove some of the added reactant. For future reference, the same principle applies to products in an equilibrium as well.
In this case, hydrogen gas is a reactant, and hydrogen is being removed. According to </span><span>Le Chatelier's principle, the system will shift to create more hydrogen gas. In essence, it will shift in the direction of the hydrogen gas, so there will be a shift toward the reactants.
To clear something up, Keq will not change, as it is a constant value with constant conditions (such as temperature, pressure, etc.).</span>
Answer:
With respect to a fixed point, motion is defined as a change in<u> position.</u>
Explanation:
MOTION -: Motion is described as the fact in which any object or body changes its position over the time with respect to a fixed point .
Motion is defined as displacement, distance, velocity , acceleration, speed , and time in mathematical terms. By linking an observer to a frame of reference and measuring the shift in the position of the body with a change in time relative to that frame, the motion of a body is observed.
Answer:
Molecules
Explanation:
If you had more than one atom chemically bonded together, then regardless of the types of atoms that are bonded, you're going to have a molecule regardless.
A "FORCE" is required to cause acceleration or cause an object to move.
