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3 years ago

Which of the following groups of children are least likely to be abused than others

1 answer:

ioda3 years ago

5 0

Approximately 4.6 percent of kids get bullied, and then approximately 5. something gets you to the kids who aren't bullied, half of it tge bystanders and the other half the bullies. So, you're left with that other percent of kids who get abused. I hope that helped and if it did then you're welcome

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For the galvanic (voltaic) cell fe(s) + mn²⁺(aq) ⟶ fe²⁺(aq) + mn(s) (e° = 0.77 v at 25°c), what is [fe²⁺] if [mn²⁺] = 0.050 m an

Nuetrik [128]

The concentration of Iron in the galvanic (voltaic) cell Fe(s) + Mn²⁺(aq) ⟶ Fe²⁺(aq) + Mn(s) is 0.02297 M.

<h3>What is the Nernst Equation?</h3>

The Nernst equation enables us to identify the cell potential(voltage) in presence of non-standard conditions in a galvanic cell. It can be expressed by using the formula:

$\mathbf{E_{cell} = E_o - \dfrac{0.059}{n} \times log \dfrac{[Fe^+]}{[Mn^{2+}]}}$

where;

n = Number of electrons = 2
$\mathbf{E_o}$ = Initial voltage = 0.77 V
$\mathbf{E_{cell}}$ = Cell voltage = 0.78 V
$\mathbf{[Mn^{2+}]}$ = Manganese concentration = 0.050 M

Replacing the values into the above equation, we have:

$\mathbf{0.78 = 0.77 - \dfrac{0.059}{2} \times log \dfrac{[Fe^{2+}]}{[0.050]}}$

$\mathbf{0.78 -0.77= -0.0296\times log \dfrac{[Fe^{2+}]}{[0.050]}}$

$\mathbf{log^{-1} (-0.3378) = \dfrac{[Fe^{2+}]}{[0.050]}}$

$\mathbf{Fe^{2+} = (0.4594\times 0.050 )\ M}$

$\mathbf{Fe^{2+} =0.02297 \ M }$

Learn more about using the Nernst equation here:

brainly.com/question/24258023

6 0

2 years ago

Science subject

eimsori [14]

1. What is geothermal energy?

D. It is the heat coming from the Earth’s interior.

2. In which areas could you find geothermal power plant?

Near hot steam reservoirs. So, C. near volcanoes.

3. What could be the structure of the volcanoes which serves as the source of geothermal energy?

B. Magma Chamber? I am unsure.

4. Which of the following is NOT involved in the geothermal plant system? *

D. Wood

"Geothermal power plants use steam to produce electricity. The steam comes from reservoirs of hot water found a few miles or more below the earth's surface. The steam rotates a turbine that activates a generator, which produces electricity."

5. Why is the Philippines considered as one of the world’s top producer of geothermal energy?

D. The Philippines lies along the Pacific Ring of Fire.

"The Philippines is one of the world's top producers of geothermal power, owing to its location along the Ring of Fire zone of Pacific volcanoes."

6. What will happen to hot water in a geothermal power plant?

A. It will turn into steam.

"Hot water is pumped from deep underground through a well under high pressure. When the water reaches the surface, the pressure is dropped, which causes the water to turn into steam. The steam spins a turbine, which is connected to a generator that produces electricity."

8. How does geothermal energy affect the environment negatively?

"The main environmental concern that comes with geothermal power plants is the potential for surface instability. Because geothermal plants remove water and steam from reservoirs within the earth, the land above those reservoirs can sometimes sink slowly over time."

9. What makes geothermal energy environmental friendly?

A. It is a renewable source of energy

10. Which of the following places in the Philippines can produce geothermal energy? *

D. Tiwi, Albay

"Philippine geothermal resources are spread among 7 specific regions: Leyte, MakBan, Tiwi, South Negros, BacMan, Mindanao, and the Northern Negros."

7 0

2 years ago

The smiths took out a $130,000, 30-year mortgage at an apr of 6.5%. the monthly payment was $821.69. what will be their total in

harkovskaia [24]

Interest charges: $165,808,40

7 0

2 years ago

Which of the following processes suggest that matter is made up of minute particles.

Tasya [4]

Answer:

the answer is evaporation

Explanation: Evaporation is the process by which a liquid transforms into vapor (a gas). When some material is in its liquid phase, its particles are really close together (but not as much as we would see in a metal). As the temperature of the liquid increases, also does the kinetic energy of the particles. This cause the particles in the water to move a lot faster, thus its oscillations are larger. This causes an increase in the volume of the material.

3 0

2 years ago

Identify the number of moles of each element present in one mole of nh4no3. # moles n: # moles h: # moles o:.

olasank [31]

Solution; N:2, H:4, O:3

Step by step solution:
There are 2 n’s
The 4 after the h means that there’s 4 h
And the 3 after the o means that there’s 3 o

5 0

2 years ago

Read 2 more answers