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Jlenok [28]
3 years ago
10

5. How does skin keep germs from getting in your body? (1 point) Cells have many layers to protect us.

Chemistry
1 answer:
stepan [7]3 years ago
8 0

Answer:

5. By having many layers of skin cells, you skin acts as a protective barrier to prevent unnecessary items from entering your body. It is your body’s first line of defense!

6. Through a hair follicle

7. grow and divide

8. inside the stomach

9. small intenstine

Explanation:

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Robert Boyle put chemistry on a firm scientific footing, transforming it from a field bogged down in alchemy and mysticism into one based on measurement. He defined elements, compounds, and mixtures, and he coined the new term 'chemical analysis, a field in which he made several powerful contributions.
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Match the definitions below with the correct component of the scientific method:
laiz [17]
A and 3

B and 6

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D and 1

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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!

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Which expression is equivalent to (q Superscript 6 Baseline) squared?
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Answer:

The answer is c

Explanation:

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In the reaction C+02 arrow C02 which element is reduced in the reaction? C O2 CO2
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No one is reduced.

Explanation:

It is an example oxidation reaction in which carbon is oxidised to form carbon dioxide.

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