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nexus9112 [7]
3 years ago
10

Suggest 2 reasons why copper should not be disposed in landfill sites

Chemistry
2 answers:
lidiya [134]3 years ago
8 0
It's a reliable source to many of products and it's value is far to hight to simply abandoned
SIZIF [17.4K]3 years ago
6 0
Because it's a waste. And it's medal instead of disposing just reuse it and also it can affect people  Like high exposure of copper can be dangerous 
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Fill in all the grey boxes including the green box. PLEASE HELP
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Answer:

2Na + 2H2O ----> 2NaOH + H2

Explanation:

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Based on the greenhouse effect, if the amount of carbon dioxide in the air decreased, what would happen?
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A) the average global temp. Would decrease
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Which feature do all adult echinoderms have?
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The common name to the family member of phylum Echinodermata of marine family is echinoderm. They are usually characterized by a five-fold symmetry, and possess an internal skeleton of calcite plates.  They are found at every ocean depth.

The features of all adult echinoderm are:

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What kind of intermolecular force is between hydrogen sulfide and hydrogen iodide?
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3 years ago
To determine the enthalpy and entropy of dissolving a compound, you need to measure the Ksp at multiple _______. Then, plot ln(K
Aloiza [94]

Answer:

To determine the enthalpy and entropy of dissolving a compound, you need to measure the Ksp at multiple temperatures. Then, plot ln(Ksp) vs. 1/T. The slope of the plotted line relates to the enthalpy (ΔH) of dissolving and the intercept of the plotted line relates to the entropy (ΔS) of dissolving.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us use the thermodynamic definition of the Gibbs free energy and its relationship with Ksp as follows:

\Delta G=-RTln(Ksp)\\\\\Delta G=\Delta H-T\Delta S

Thus, by combining them, we obtain:

-RTln(Ksp)=\Delta H-T\Delta S\\\\ln(Ksp)=-\frac{\Delta H}{RT} +\frac{T\Delta S}{RT} \\\\ln(Ksp)=-\frac{\Delta H}{RT} +\frac{\Delta S}{R}

Which is related to the general line equation:

y=mx+b

Whereas:

y=ln(Ksp)\\\\m=-\frac{\Delta H}{R} \\\\x=\frac{1}{T} \\\\b=\frac{\Delta S}{R}

It means that we answer to the blanks as follows:

To determine the enthalpy and entropy of dissolving a compound, you need to measure the Ksp at multiple temperatures. Then, plot ln(Ksp) vs. 1/T. The slope of the plotted line relates to the enthalpy (ΔH) of dissolving and the intercept of the plotted line relates to the entropy (ΔS) of dissolving.

Regards!

8 0
3 years ago
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