What is a coefficient?

A whole number that appears in front of a formula in a balanced chemical equation

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A whole number that appears as a subscript at the end of a formula in a balanced chemical equation

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A whole number that appears as a subscript in front of a formula in a balanced chemical equation

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A fraction that appears in front of a formula in a balanced chemical equation

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A whole number that appears as a superscript at the end of a formula in a balanced chemical equation

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Solution

The correct option is A A whole number that appears in front of a formula in a balanced chemical equation
A coefficient is a whole number that appears in front of a formula in a balanced chemical equation.
For example, in the balanced chemical equation $H_{2} S O_{4} + 2 N a O H \to N a_{2} S O_{4} + 2 H_{2} O$ .
The coefficient for $N a O H$ is $2$ .

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Similar questions

In this method of balancing chemical equations, trials are made to balance the equation by using the smallest whole number coefficient, the method is known as ___.

Q. A balanced stoichiometric chemical equation which includes a change in enthalpy, that is

Δ H

, is known as:

Q. Show that ''Law of conservation of mass is fully justified in a balanced chemical equation''.

We know that balancing of a chemical equation is entirely based on law of conservation of mass. However, the concept of Principle of Atom Conservation (POAC) can also be related to law of conservation of mass in a chemical reaction. So, POAC can also act as a technique for balancing a chemical equation. For example, for a reaction:

A B C_{3} \to A B + C_{2}

On applying POAC for A,B & C and relating the 3 equations, we get :

\frac{n_{A B C_{3}}}{2} = \frac{n_{A B}}{2} = \frac{n_{C_{2}}}{3}

(

n_{x}

: number of moles of X)
Thus, the coefficients of

A B C_{3}

A B

C_{2}

in the balanced chemical equation will be 2, 2 & 3 respectively and the balanced chemical equation can be represented as:

2 A B C_{3} \to 2 A B + 3 C_{2}

Now answer the following question.

Which of the following relation is correct regarding the numerical coefficients p, q, r in the balanced chemical equation,

p A + q B_{2} \to r A_{2} B_{5}

Q. How to make equations balanced with the chemical formulas

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