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trasher [3.6K]
3 years ago
15

Tells how many of each atom there are in a formula

Chemistry
2 answers:
Sveta_85 [38]3 years ago
8 0

Answer:

\large \boxed{\mathrm{subscripts}}

Explanation:

Subscripts are numbers written after elements, subscripts indicate how many of each atom there are in a compound.

adell [148]3 years ago
6 0

The atoms of each element in an compund is written in the <u>subscript</u>. The number of atoms present in any compound whether made up of only same element or different element is termed as <u>Atomicity</u><u>.</u>

<h3>☃️ <u>For</u><u> </u><u>Example</u><u>:</u></h3>

Given compound = \boxed{\sf{H_2O}}

Here, there are two atoms of hydrogen and one atom of oxygen, So ratio of the atoms of elements in Water molecule = 2 : 1

<u>━━━━━━━━━━━━━━━━━━━━</u>

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A scientist measures the standard enthalpy change for the following reaction to be 67.9 kJ:
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Answer: The standard enthalpy of formation  of H_2O(g) is  -252.1 kJ/mol.

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H_f{H_2O}=-252.1kJ/mol

Thus standard enthalpy of formation  of H_2O(g) is  -252.1 kJ/mol.

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