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3 years ago

What is the best description of how heat is transferred from deep in the earth to the surface?

Chemistry

2 answers:

ad-work [718]3 years ago

4 0

The answer is C hope this helped

Lana71 [14]3 years ago

3 0

Answer:

pretty sure it's C,

Explanation:

Mantle convection is the very slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface. ... This hot added material cools down by conduction and convection of heat.

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Answer this i’m so confused

lesya692 [45]

Answer:

You can answer anything

Explanation:

Anything

6 0

3 years ago

What is the reduction potential of a hydrogen electrode that is still at standard pressure, but has ph = 5.65 , relative to the

Zigmanuir [339]

Answer:

$\boxed{\text{-0.275 V}}$

Explanation:

We must use the Nernst equation

$E = E^{\circ} - \dfrac{RT}{zF} \ln Q$

1. Write the equation for the cell reaction

If you want the reduction potential, the pH 5.65 solution is the cathode, and the cell reaction is

E°/V

Anode: H₂(1 bar) ⇌ 2H⁺(1 mol·L⁻¹) + 2e⁻; 0

Cathode: 2H⁺(pH 5.65) + 2e⁻ ⇌ H₂(1 bar); 0

Overall: 2H⁺ (pH 5.65) ⇌ 2H⁺(1 mol·L⁻¹); 0

Step 2. Calculate E°

(a) Data

E° = 0

R = 8.314 J·K⁻¹mol⁻¹

T = 25 °C

n = 2

F = 96 485 C/mol

pH = 5.65

Calculations:

T = 25 + 273.15 = 298.15 K

$\text{H}^{+} = 10^{\text{-pH}} = 2.24 \times 10^{-5}\text{ mol/\L}\\\\Q = \dfrac{\text{[H}^{+}]_{\text{prod}}^{2}}{\text{[H}^{+}]_{\text{react}}^{2}} = \dfrac{(1.00)^{2}}{(2.24 \times 10^{-5})^{2}} =2.00 \times 10^{9}\\\\\\E = 0 - \left (\dfrac{8.314 \times 298.15 }{2 \times 96485}\right ) \ln{2.00 \times 10^{9}}\\\\= -0.01285 \times 21.41 = \textbf{-0.275 V}\\\text{The cell potential for the cell as written is }\boxed{\textbf{-0.275 V}}$

6 0

3 years ago

Which of the following substances can be decomposed by chemical change?

vovangra [49]

NaCl can be decomposed by electrolysis

Na, Cl2 and K are in the simplest form and they cannot be decomposed

8 0

3 years ago

How does the law of conservation of mass apply to this reaction: C2H4 + O2 → H2O + CO2?

kozerog [31]

its d because it all has to be balanced

7 0

3 years ago

Read 2 more answers

Which of the following apply to diffusion. Select all that apply. Solids can diffuse in liquids. Liquids can diffuse in liquids.

e-lub [12.9K]

Correct answers are:

Solids can diffuse in liquids. Think of a sugar cube sitting at the bottom of a cup of tea.
Liquids can diffuse in liquids. Think of a drop of food colouring in water
It is the process of intermingling atoms from one substance into another.

The other answers are incorrect because:

Gas molecules are far apart and diffuse rapidly.
A solid can diffuse into another solid. Pure lead can diffuse into gold, and pure gold can diffuse into lead.

3 0

3 years ago

Read 2 more answers