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kotykmax [81]
4 years ago
11

Chemistry 1 Question

Chemistry
2 answers:
nika2105 [10]4 years ago
7 0

Answer: Theres no question here

Explanation:

mr Goodwill [35]4 years ago
7 0

Answer: Physics; Question 2

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How many grams are in 3.40 x 10^24 molecules of CH4
Arturiano [62]

Answer:

90.37 g

Explanation:

From Avogadro Number,

1 mole of every substance contains a particle number of 6.02×10²³

From the question,

1 mole of CH₄ contains 6.02×10²³ molecules.

But,

1 mole of CH₄ has a mass of 16 g

Therefore,

16 g of CH₄ contains 6.02×10²³ molecules

Then,

Y g will contain 3.4×10²⁴ molecules

Solve for Y

Y = (16× 3.4×10²⁴)/(6.02×10²³)

Y = 90.37 g

6 0
3 years ago
The alchemical, medical, and technological traditions were precursors to chemistry. State a contribution that each made to the d
Kisachek [45]

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

4 0
2 years ago
A physical change is chemically the same after the experiment.<br> True<br> False
Elan Coil [88]

Answer: True

Explanation:

7 0
3 years ago
What is the concentration in molarity of a solution made using 30.0 grams of CH3OH in 300.0 mL of water?
jasenka [17]
The answer is in the attached photo

4 0
4 years ago
Read 2 more answers
What is the mass of 8.90 moles of magnesium chloride, MgCl2?
Korolek [52]
No of moles of MgCl2 = weight of MgCl2 / Molecular weight of MgCl2 Weight of MgCl2 =moles of MgCl2 x molecular mass of MgCl2 = 8.90 x 95=845.5 gm
6 0
3 years ago
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