Nope. The definition talks about the RATES in each direction, but there's no reason that it must happen at any particular STAGE during the whole thing. Choice 'E' even talks about a reaction that doesn't reach equilibrium until it's almost done. The one you want is 'A'.
Answer:
B.the velocity for the forward reaction equal that of the reverse reaction
Explanation:
A state of rest or motion of a system is described as equilibrium.
For a system to be in equilibrium, the following conditions must be met:
1. It must be involved in reversible chemical process no matter how small the extent of the reversibility.
2. The rate of forward process is equal to the rate of backward or reverse process.
3. The system must be closed.
4. There is no change in the concentration of each of the species in equilibrium with respect to time. There must be a constancy of concentration of each species in the equilibrium process.
When we change any of the conditions of equilibrium, the Le Chatelier's principle comes into play.
The principle states that "if any of the conditions of a system in equilibrium is changed, the system will adjust itself in order to annul the effect of the change".
<u>Answer:</u> The correct answers are 
<u>Explanation:</u>
To find the polynomials which could represent the are of a square having side x greater than 2, we need to find the value of 'x' for all the given polynomials.
From the given options:
- 1.
x = -3 is ignored.
- 2.
x = -10 is ignored
- 3.
To solve this we use the quadratic formula:
Putting values of a, b and c, we get:
As, x comes out to be 2 and is not greater than 2. Hence, this is not considered.
- 4.
Solving for 'x' by splitting the middle term:
Hence, this is ignored.
- 5.
Solving for 'x' by splitting the middle term:
Hence, this is ignored.
So, the correct polynomials are
Answer:
Among the given options which one best suits the definition of an element?
Explanation:
Element:
Element is the pure form of matter which cannot be broken down into new simpler substances either by physical or chemical means.
It is made up of the same type of atoms.
For example:
Copper, silver, gold, oxygen, etc.
Among the given options:
the third option that is elements are made of atoms is the correct option.
Remaining statements:
Elements are made up of complex chains of carbon and oxygen is wrong,
Elements can be broken down into other simpler substances is wrong.
Because we don't get any simpler substances from elements.
For example, if we break a gold rod many times also only its size varies and no new substance is obtained from it.
All elements have the same chemical properties is a wrong statement.
Because each element is unique and it has its own properties.
Answer:
The Answer is A
Explanation:
particles in gas much like any other particles vibrate. but gas is moving constantly so the answer would be A
