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3 years ago

Quartz when heat and pressure are apllied to it

1 answer:

3 0

If you melt and cool silicon dioxide under very special conditions
in the laboratory we can grow a single crystalline form of 
silicon dioxide that we call quartz. In quartz crystals all of 
the molecules are aligned and bonded together in a regular three 
dimensional tetrahedral structure forming a very hard, transparent 
material with special electronic properties.

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Pinky put her wet clothes inside the room for drying. But her mom told her to put it under the sun. Give reason why her mom told

bulgar [2K]

so it doesn't get smaller

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2 years ago

Can somebody plz just answer this 1 question thx!!!

coldgirl [10]

Answer:

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3 years ago

Your blood contains 2 L of Nitrogen at 1 atm. When you go scuba diving at the Great Barrier Reef, the pressure increases to 8.7

trasher [3.6K]

Answer:

Divers breathe compressed air that contains nitrogen. At higher pressure under water, the nitrogen gas goes into the body's tissues. ... Nitrogen narcosis: Deep dives can cause so much nitrogen to build up in the brain that you can become confused and act as though you've been drinking alcohol.Oxygen becomes rapidly toxic at depth – prolonged exposure to pure oxygen below a few metres can kill you. It is not an appropriate scuba tank gas mixture. ... Oxygen is also highly reactive and can make other substances flammable. Safety training is necessary to work with pure oxygen.

Explanation:

I hope this helped,i m sorry if its not the exact answer you need.

6 0

3 years ago

The hydrolysis of esters in base is called ________. a. the hunsdiecker reaction b. transesterification c. saponification d. the

KengaRu [80]

The hydrolysis of esters in base is called saponification .

So, option C is correct one.

The saponification is the process that involves conversion of fats , oils , lipids into soap and water in the presence of alkaline medium. Saponification is the process of making soap.

During the saponification process, the mixture has an acidity, which tells that it's not safe for usage. After the saponification process is complete, the pH should be a base.The process of formation of carboxylic salt and water by hydrolysis of ester in base is called saponification.

learn more about saponification

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2 years ago

In this reaction, how many grams of CH4 would be formed from 25 g C? C + 2H2 → CH4

Zina [86]

33.33 grams of CH4 would be formed from 25 g C.

C + 2H2 → CH4

from given reaction we can say that ,

2 moles of hydrogen is required for 1 mole of carbon and these will react to form 1 mole of methane.

atomic mass of Carbon = 12 gm

Molecular mass of H2 = 2(H)

= 2(1)

=2gm

moles = molecular mass / given mass

for C,

if 12 gm = 1 mole

then 25 gm = ? mole

=2.083 moles

1 mole of C will produce 1 moles of CH4

so, 2.083 moles of C also will produce 2.083 moles moles of CH4

molecular weight of methane= C+4(H)

= 12+4(1)

= 16 gm

amount of methane produced= moles × molecular mass

=2.083× 16

= 33.33 gm

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2 years ago