A flashlight battery is an example of a...?

Answers

Answer 1

Answer:

A flashlight battery is an example of a chemical battery, specifically a type of electrochemical cell. It converts chemical energy into electrical energy through a chemical reaction.

Inside the battery, there are two electrodes, typically made of different metals or metal compounds, and an electrolyte solution. When the battery is connected to a circuit, a chemical reaction occurs at the electrodes, resulting in the flow of electrons from one electrode to the other.

This flow of electrons generates an electric current that powers the flashlight or any other device connected to the battery.

The chemical reaction within the battery is reversible, meaning it can be recharged by applying an external electrical current to reverse the reaction and restore the chemical energy within the battery.

In summary, a flashlight battery is an example of a chemical battery because it utilizes a chemical reaction to convert chemical energy into electrical energy for powering electrical devices.

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Answer 2

Answer: chemical potential energy.

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the element silver has two naturally occurring isotopes 109Ag and 107Ag with a mass of 106.905u. silver consists of 51.82% 107Ag and has an average atomic mass of 107.868u. calculate the mass of 109 Ag

Answers

106.905*0.5182+0.4818x=107.868
x=108.904 amu

No, it can have several different isotopes that have a weighted average atomic mass of 52 amu.

Complete the paragraph to describe the characteristics of a silicon tetrahydride molecule (SiH4). The Lewis structure and table of electronegativities are given.

Answers

Answer: The correct answer is polar, tetrahedral and non-polar.

Explanation:

It is given a compound which is silicon tetrahydride having formula $SiH_4$

The electronegativities of silicon and hydrogen are 1.9 and 2.1 respectively.

Difference in electronegativity = 2.1 - 1.9 = 0.2

From above, some difference in the electronegativities of the atoms is there. This means that bond polarity of this molecule is polar. If the difference would have been 0, the bond polarity of the molecule is taken as non-polar.

To determine the molecular shape of the given molecule, we calculate the hybridization of this molecule. The equation used for this is:

$\text{Number of electrons}=(1)/(2)[V+N-C+A]$

where,

V = number of valence electrons present in central atom i.e. Silicon = 4

N = number of monovalent atoms bonded to central atom = 4

C = charge of cation = 0

A = charge of anion = 0

Putting values in above equation, we get:

$\text{Number of electron pairs} =(1)/(2)[4+4-0+0]=4$

As, the total number of electron pairs is 4, this means that the hybridization of this molecule will be $sp^3$ and the molecular shape will be tetrahedral.

The net dipole moment of the molecule is 0 because of the symmetry of the molecule. Thus, the molecule is considered as a non-polar molecule.

Hence, the correct answer is polar, tetrahedral and non-polar.

What is the ratio of atoms in carbon dioxide , or CO2

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the formula shows the ratio of atoms. CO2. it shows that for each atom of Carbon. there are 2 oxygen atoms so the ratio is 1:2

What kind of mistake has a scientist made if he accidentally spills a chemical that causes invalid conclusions? Is it a honest mistake or a biased mistake

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honest mistake because he accidentally spilled it

What is nitrogen state at 20 celcius

Answers

Hi there, I believe that nitrogen turns into a liquid at 20 degrees Celsius. Thererore, the nitrogen state is liquid.

Three coyotes per square kilometer is an example of population

Answers

This should be an example of population density which is how many individuals there are per unit of area.

I hope this helps. Let me know if you were looking for a different answer.

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