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SSSSS [86.1K]
2 years ago
11

Is phosphorus dissolving in carbon disulfide a chemical or physical change?​

Chemistry
1 answer:
Shkiper50 [21]2 years ago
6 0

Phosphorus dissolving in carbon disulfide is a physical change.

A chemical change results from a chemical reaction, in which the nature of the substance is altered. On the other hand, a physical change is when matter changes forms but not chemical identity.

When phosphorus dissolves in carbon disulfide, it changes its state of aggregation, but not its nature. Thus, this is a physical change.

Phosphorus dissolving in carbon disulfide is a physical change.

You can learn more about physical and chemical changes here: brainly.com/question/13620149

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Answer:

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<em>ANSWER</em>

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STEP-BY-STEP EXPLANATION:

Given information

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To calculate the number of moles, we will be using the below formula

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Recall that, the Avogadro's constant is given as

6.02\cdot10^{23}\begin{gathered} 5.45\cdot10^{26}\text{ = x }\cdot\text{ 6.02 }\cdot10^{23} \\ \text{Divide both sides by 6.02 }\cdot10^{23} \\ x\text{ = }\frac{5.45\cdot10^{26}}{6.02\cdot10^{23}} \\ x\text{ = }\frac{5.45}{6.02}\cdot10^{26\text{ - 23}} \\ x\text{ = 0.9053 }\cdot10^3 \\ x\text{ = 905.32 moles} \end{gathered}

Therefore, the number of moles of methane is 905.32 moles

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