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Wewaii [24]
3 years ago
14

The simplest formula is obtained by dividing the ______ of each element by the _______. 1. number of moles of each element; numb

er of moles of product 2. number of moles; smaller number of moles 3. number of moles; larger number of moles 4. grams of each element; total mass of the product
Chemistry
1 answer:
alexandr402 [8]3 years ago
7 0

Answer:

2. Number of moles ; smaller number of moles

Explanation:

The simplest formula also called the empirical formula is the ratio of moles to the number of smaller moles which is obtained by simply dividing the number moles with the number of smaller moles

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Answer:

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Explanation:

Let's consider the following balanced equation.

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We can calculate the standard enthalpy of reaction (ΔH°rxn) from the standard enthalpies of formation (ΔH°f) using the following expression.

ΔH°rxn = [2 mol × ΔH°f(PbO(s)) + 2 mol × ΔH°f(SO₂(g) )] - [2 mol × ΔH°f(PbS(s)) + 3 mol × ΔH°f(O₂(g) )]

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ΔH°rxn = [2 mol × (-217.32 kJ/mol) + 2 mol × (-296.83)] - [2 mol × (-100.4) + 3 mol × 0 kJ/mol]

ΔH°rxn = -827.5 kJ

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