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alexdok [17]
4 years ago
12

Calculate the standard cell potential given the following standard reduction potentials: Al3++3e−→Al;E∘=−1.66 VAl3++3e−→Al;E∘=−1

.66 V Ag++e−→Ag;E∘=0.799 V
Chemistry
1 answer:
lana66690 [7]4 years ago
5 0

Answer:

2.459 V

Explanation:

If we look at the data we have from the question closely, we will discover that aluminum has a very negative reduction potential. Recall that very negative reduction potentials are associated with strong reducing agents.

Similarly, silver has a positive reduction potential signifying that it is an oxidizing agent. Since the reducing agent is oxidized in a redox reaction and the oxidizing agent is reduced.

Hence;

E°cell= E°reduction process - E°oxidation process

E°cell= 0.799 -(-1.66)

E°cell= 2.459 V

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The correct definition of density is the degree of compactness of a substance.
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4 years ago
A system contains bonds between particles. Which choice describes the microscopic structures of the energy in this system? There
borishaifa [10]

Answer:

The correct answer is: <em>There must be potential energy in the bonds due to its particles position.</em>

Explanation:

Potential energy is a kind of energy which is stored in an object due to its position or configuration. For example, if there is a ball in the fifth floor of a building, it has a determined potential energy which is converted to kinetic energy when the ball fall down. The same is in the case of the chemical bonds: the particles or atoms have potential energy related to their relative positions in the system. In fact,  chemical energy is considered a form of potential energy (stored in chemical bonds).

8 0
4 years ago
1
Delvig [45]

Answer:

The molarity of the solution is 0,99M

Explanation:

We calculate the weight of 1 mol of NaCl from the atomic weights of each element of the periodic table. Then, we calculate the molarity, which is a concentration measure that indicates the moles of solute (in this case NaCl) in 1000ml of solution (1 liter)

Weight 1 mol NaCl= Weight Na + Weight Cl= 23 g + 35, 5 g= 58, 5 g

58, 5 g-----1 mol NaCl

145 g ---------x= (145 g x 1 mol NaCl)/58, 5 g= 2,48 mol NaCl

2,5 L solution------ 2, 48 mol NaCl

1 L solution------x= (1 L solutionx 2, 48 mol NaCl)/2,5L solution

x=0,99 mol NaCl---> The solution is 0,99 molar (0,99 M)

Read more on Brainly.com - brainly.com/question/15453053#readmore

6 0
4 years ago
A balloon contains 8.4 L of helium gas at STP. How many moles of helium are in the balloon? 0.38 moles He ,190 moles He ,2.1 mol
damaskus [11]

Answer:

0.38 moles He

Explanation:

from the  ideal gas law PV= nRT you can calculate the volume of 1 mole at STP (273..1K  and 1 atm of pressure)  the MOLAR VOLUME IS

22.4 L

In the problem you have 8.4L

8.4 L/22.4 L=0.375 moles

so

0.38 moles He

8 0
2 years ago
Select the correct answer.
slamgirl [31]

Answer: b

Explanation:

5 0
3 years ago
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