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IceJOKER [234]
3 years ago
12

A sample of concrete contains cement, gravel, crushed rocks, sand, and water. Each of these contains different metals and minera

ls and hence has different colors and different properties.
Which term or terms could be used to describe this sample of concrete?
Chemistry
1 answer:
Zepler [3.9K]3 years ago
8 0

As the concrete has cement, gravel, crushed rocks, sand, and water of different physical state and can be separated by physical methods hence it should be called as a mixture.

As the components have significant physical boundaries which clearly identify their presence, the mixture is heterogeneous and not homogeneous.

Thus this is a concrete is a heterogeneous mixture of cement, gravel, crushed rocks, sand, and water

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Explanation:

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Answer:

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The reaction is: C₃H₈(g) + 5O₂(g)  →  3CO₂ (g) + 4H₂O (g)

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27.5 g . 1mol / 44 g = 0.625 moles

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Let's find out the limiting reactant:

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Oxygen is the limiting reactant, we need 3.125 moles but we only have 2.009 moles

Ratio is 5:3. 5 moles of O₂ produce 3 moles of CO₂

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