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3 years ago

The chemical symbol for water is H2O.

Physics

2 answers:

Tatiana [17]3 years ago

4 0

Correct your answer is perfect.

vlada-n [284]3 years ago

3 0

Hi!

Yes, this is going to be true. Water is composed of one oxygen, and two hydrogen atoms.

The chemical formula is simply telling you what it is made up of. The number in this chemical formula basically says that there are two hydrogen atoms in this element, which in our case is water.

Another thing to note is that these atoms are connected by a covalent bond.

This means that these atoms are sharing pairs of electrons between them, which is what we call shared or bonding pairs!

Hopefully, this helps! =)

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How do I draw a four-cell battery with the cells connected in series with each other?

Goshia [24]

Answer:

Explanation:

Arrangements of cells, when two or more cells are connected together they form what is called a battery

There are two ways cells can be connected

1. Parallel

2. Series

Find attached a sketch of serial arrangement

7 0

3 years ago

Ionic bonds form between what

AysviL [449]

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3 years ago

Heat flows into a gas in a piston and work is performed on the gas by its surroundings. The amount of work done is equal to the

inna [77]

Answer:

The Internal energy of the gas did not change

Explanation:

In this situation the Internal energy of the gas did not change and this is because according the the first law of thermodynamics

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Q = heat added

W = work done

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3 years ago

The mass luminosity relation L  M 3.5 describes the mathematical relationship between luminosity and mass for main sequence sta

ivanzaharov [21]

Answer:

(a) 11.3 L

(b) 10 M

Explanation:

The mass-luminosity relationship states that:

Luminosity ∝ Mass^3.5

Luminosity = (Constant)(Mass)^3.5

So, in order to find the values of luminosity or mass of different stars, we take the luminosity or mass of sun as reference. Therefore, write the equation for a star and Sun, and divide them to get:

Luminosity of a star/L = (Mass of Star/M)^3.5 ______ eqn(1)

where,

L = Luminosity of Sun

M = mass of Sun

(a)

It is given that:

Mass of Star = 2M

Therefore, eqn (1) implies that:

Luminosity of star/L = (2M/M)^3.5

Luminosity of Star = (2)^3.5 L

Luminosity of Star = 11.3 L

(b)

It is given that:

Luminosity of star = 3160 L

Therefore, eqn (1) implies that:

3160L/L = (Mass of Star/M)^3.5

taking ln on both sides:

ln (3160) = 3.5 ln(Mass of Star/M)

8.0583/3.5 = ln(Mass of Star/M)

Mass of Star/M = e^2.302

Mass of Star = 10 M

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4 years ago

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trapecia [35]

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