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natka813 [3]
2 years ago
5

The alchemical, medical, and technological traditions were precursors to chemistry. State a contribution that each made to the d

evelopment of the science of chemistry.
Chemistry
1 answer:
Kisachek [45]2 years ago
4 0

Alchemy was a form of early chemistry that aimed to transmute base metals into gold and to create an elixir of longevity or eternal life.

Despite these connotations of the mythic and mystical, alchemical follow contend a crucial role within the evolution of contemporary science.

Historically, alchemy refers to each the investigation of nature and an early philosophical and religious discipline that combined chemistry with metal work. Alchemy additionally encompassed physics, medicine, astrology, mysticism, spiritualism, and art.

Chemistry in medicine:

Major contributions to health care have been made possible by chemistry. The development of new drugs involves chemical analysis and synthesis to form new compounds.

Chemistry contributes to the preparation of materials for surgery (sutures, artificial skin, and sterile materials). The sutures used in many surgeries today do not have to be removed, because they simply dissolve in the body after a period of time. Replacement blood vessels for heart and other types of surgery are often made of chemicals that do not react with the tissues, so they will not be rejected by the body and this was made possible with the help of the chemistry.

Chemistry in technologies:

The Iron Age, saw the prevalence of iron increase as the major metal of choice for cutting tools and weapons. Iron was slower to evolve as a material because it required higher temperatures to work the metal. This shift saw a change in smelting practices, improved furnace technologies, and also the development of forging, as opposed to the casting techniques used in the Bronze Age.

Now a days, in big industries, the machines which are made up of big metal sheets or metals, are given shape with the help of fire, by the process of Smelting. The industries tried to make plastics afterwards.

To know more about Alchemy, refer to this link:

brainly.com/question/5997100

#SPJ4

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The ears work with the brain and other body parts through a series of steps that help
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Answer: B: Your ears send a message through the nerves to the brain.

5 0
2 years ago
The rock in a particular iron ore deposit contains 82 % Fe2O3 by mass. How many kilograms of the rock must be processed to obtai
Zinaida [17]

Answer:

Mass of rock = 4533.4 kg

Explanation:

Percent composition is percentage by the mass of element present in the compound.

Given that the Fe_2O_3 is 82 % by mass.

It means that 82 kg of Fe_2O_3 is present in 100 kg of rock

To find the mass of rock which contains 2600 kg of iron

2600 kg = 2600*1000 g

2 moles of iron are present in 1 mole of Fe_2O_3

Molar mass of iron = 55.845 g/mol

Mass of 2 moles = 55.845 * 2 = 111.69 g/mol

Molar mass of Fe_2O_3 = 159.69 g/mol

It means,

111.69 g of iron are present in 159.69 g of Fe_2O_3

1 g of iron is present in 159.69/111.69 g of Fe_2O_3

2600*1000 g is present in (159.69/111.69)*2600*1000 g of Fe_2O_3

Mass of  Fe_2O_3 = 3717378.47 g =3717.38 kg

Thus,

82 kg of Fe_2O_3 is present in 100 kg of rock

1 kg of Fe_2O_3 is present in 100/82 kg of rock

3717.38 kg of Fe_2O_3 is present in (100/82)*3717.38 kg of rock

Mass of rock = 4533.4 kg

5 0
3 years ago
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Using the following thermochemical equation, determine the amount of heat produced from the combustion of 24.3 g benzene (C6H6).
Anna007 [38]

Answer:

ΔH = -976.5 kJ

Explanation:

For the reaction given, there are 2 moles of benzene (C6H6). The heat of this reaction is -6278 kJ, which means that the combustion of 2 moles of benzene will lose 6278 kJ of heat. It is an exothermic reaction.

The value of ΔH, the enthalpy, is a way of measurement of the heat, and it depends on the quantity of the matter (number of moles).

So, 24.3 g of benzene has :

n = mass/ molar mass

n = 24.3/78.11

n = 0.311 moles

2 moles ------------ -6278 kJ

0.311 moles ----------- x

By a simple direct three rule:

2x = -1953.08

x = -976.5 kJ

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3 years ago
Predict ​the polarity of 6 real molecules. First, draw the molecules and any bond dipoles. Then draw any molecular dipoles. Expl
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Answer:

Explanation:

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