CHEMISTRY HIGH SCHOOL

A voltaic cell spontaneously converts chemical energy to(1) electrical energy (3) mechanical energy
(2) geothermal energy (4) nuclear energy

Answers

Answer 1
Answer: 1 - Electrical energy
A voltaic cell is an electrochemical cell that generates electricity through redox reactions.
Answer 2
Answer: (1) electrical energy is your answer.

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What is the SI base unit for time?

Answers

The "second" is the SI base unit of time.

Answer:

Second

Explanation:

i took the test

An atom that has gained or lost electrons is called _____.a cation
an ion
inert
a molecule

Answers

It called cation, Well, When an atom gains or loses an electron, itattains a net charge and becomes an ion. When electrons are lost, theresulting ion is called cation and when electrons are gained, theresulting ion is called an anion. So, Cations have a net positivecharge, while anions have a net negative charge. it is true.

An atom that has gained or lost electrons is called an ion. The correct answer is option b.

An ion is an atom or molecule with an uneven number of protons and electrons that produces a net electrical charge.

When an atom gains one or more electrons, it becomes negatively charged and is called an anion. When an atom loses one or more electrons, it becomes positively charged and is called a cation.

For example, when sodium (Na) loses one electron, it becomes a positively charged ion or cation:

\rm Na\rightarrow Na^+ + e^-

Similarly, when chlorine (Cl) gains one electron, it becomes a negatively charged ion or anion:

\rm Cl + e^- \rightarrow Cl^-

Therefore, an ion is an atom that has gained or lost electrons. Option b is the correct answer.

Learn more about ion here:

brainly.com/question/29183072

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The solid and liquid phases of water can exist ina state of equilibrium at 1 atmosphere of pressure
and a temperature of
(1) 0°C (3) 273°C
(2) 100°C (4) 373°C

Answers

Answer: 0°C

Explanation:
Water undergoes phase changes at 1 atm pressure as follows:
Solidification, change from water to ice occurs at 0°C.
Evaporation, change from liquid to gas occurs at 100°C.

Which of the following elements would be considered a nonmetal?fluorine (#9)
silicon (#14)
cobalt (#27)
sodium (#11)

Answers

The element among the list that is not a metal there is the element fluorine.

What is a nonmetal?

A nonmetal is an element that occur towards the right hand side of the periodic table and does not have the general properties that are attributed to metals such as the ability to react with acids.

The element among the list that is not a metal there is the element fluorine.

Learn more about metals: brainly.com/question/2273750

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fluorine (#9) is a nonmetal

According to the Pauli exclusion principle, when can two electrons occupy the same orbital?

Answers

Knowing that a no orbital can accommodate more than two electrons,we can predict the maximum number of electrons in each layer or sub-layer ,It is possible when :

* Only two electrons can be assigned to an s orbital.

* three orbitals in a sub-layer p can accommodate two electrons, this sublayer can accommodate a maximum of six electrons.

* The five d orbitals of a sub-layer can accommodate a total of ten electrons.

hope this helps!

How will an energy diagram look for an exothermic reaction?The reactants and products will be at the same potential energy.



The reactants are at a higher potential energy compared to the products.



The reactants are at a lower potential energy compared to the products.



There will not be an activation energy barrier.

Answers

Answer : The correct option is, The reactants are at a higher potential energy compared to the products.

Explanation :

Exothermic reaction means energy is released and the overall enthalpy change is negative.

In exothermic reaction, the reactants are at a higher potential energy compared to the products. In other words, we can say that the products are more stable than the reactants.
B.) The reactants are at a higher potential energy compared to the products.

My reason being is because the reactants tend to gather "hyper" energy which is also known as potential energy and this will occur as shown in the answer as an Exothermic Reaction.

I really hope that this helps you out a lot. Have a nice day :)
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