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Nostrana [21]
3 years ago
12

Explain what is chemistry in 4 or more sentences

Chemistry
1 answer:
Tomtit [17]3 years ago
6 0

Answer:

the branch of science that deals with the identification of the substances of which matter is composed. the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes.the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes.

Explanation:

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What is the definition of plate tectonics?
zhuklara [117]

The definition from what I know because I remember it from biology I think is "a theory explaining the structure of the earth's crust and some other associated phenomena as resulting from the interaction of a rigid lithospheric plates that move slowly over the underlying mantle." I'll put the quotations for you to copy what I said so it doesn't sound like you got it off me and I hopefully spelt lithospheric right

6 0
3 years ago
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How many atoms of calcium, Ca would be equal to 5.472 X 104 moles Ca?
Montano1993 [528]
Answer:
             3.29 × 10²⁸ Atoms

Solution:
              Moles and Number of atoms are related to each other as,

                           Moles  =  Number of Atoms / 6.022 × 10²³   ------- (1)

Data Given;
                  Moles  =  5.472 ×10⁴

                  Number of Atoms  =  ?

Solving eq. 1 for Number of Atoms,

                        Number of Atoms  =  Moles  × 6.022 × 10²³

Putting values,

Number of Atoms  =  5.472 ×10⁴ mol × 6.022 × 10²³ atoms.mol⁻¹

Number of Atoms  =  3.29 × 10²⁸ Atoms
5 0
3 years ago
In a certain time, light travels 4.96 km in a vacuum. during the same time, light travels only 3.36 km in a liquid. what is the
Natali5045456 [20]

the refractive index of the liquid is 1.476

The refractive index, which has no dimensions, measures how quickly light passes through a substance.

It can also be described as the difference between the speed of light in a vacuum and a medium.

Refractive index is equal to the product of the light's liquid and vacuum speeds.

Therefore.

speed of light in vacuum = 4.96 km/t

speed of light in liquid = 3.36 km/t

Refractive index = 4.96/3.36

Refractive index =1.476

Therefore, the refractive index of the liquid is 1.476

To learn more about refractive index

brainly.com/question/23750645

#SPJ4

6 0
1 year ago
Write a note on Polygenic disorder.​
Lorico [155]

Answer:

a note? well alright

Explanation:

<em><u>Polygenic disease:</u></em>  (the defintion)

A genetic disorder that is caused by the combined action of more than one gene.

<u>Polygenic conditions</u><u>:</u> hypertension, coronary heart disease, and diabetes.

This is so because such disorders depend on the simultaneous presence of several genes, they are not inherited as simply as are single-gene diseases.

8 0
3 years ago
Which medical condition(s) can prevent molecules from entering the cell?
kvasek [131]

Answer:

Explanation:

any type of spreading disease that kills

6 0
3 years ago
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