Posted in Chemistry

The correct answer would be

“The gases were to light to beheld by gravity”


Related Questions

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements

Posted in Chemistry

Power plants use specialized scrubbers to remove sulfur oxide gases. true or false.

Answer:

The given statement is TRUE

Explanation:

Sulfur oxides (SOx) are compounds of sulfur and oxygen molecules. Sulfur dioxide (SO2) is the pre- dominant form found in the lower atmosphere. It is a colorless gas that can be detected by taste and smell. Scrubbers help to remove most of the sulfur oxides from the smoke stack exhaust of a power plant. In the scrubber, there is a water spray that produces a cloud of fine water droplets. The water is mixed with crushed limestone, which reacts with the sulfur and pulls it out of the exhaust

Posted in Chemistry

How does pollution affect marine life? a. pollution causes a decrease in phytoplankton populations and therefore a decrease in the occurrence of algal blooms. b. pollution causes destruction of coral reefs, which are important sources of shelter and breeding for marine animals. c. soaps, detergents, and plastics in the ocean decrease the acidity of ocean water, leading to a decrease in carbonate levels. d. pollution affects organisms close to the shoreline, but does not affect marine organisms far from the shore.?

Answer: b. pollution causes destruction of coral reefs, which are important sources of shelter and breeding for marine animals

Explanation:

Some of the air pollutants like carbon dioxide, carbon monoxide and sulfuric acid mixes with the marine water also the solid waste materials which are discharge in water and oil spill also contaminate the quality of marine water.  The pollutants directly influence the life of the marine animals. They cause destruction of the coral reefs. Water pollutants such as fertilizers, oils, animal wastes can block the sunlight reaching the reef. This can cause coral bleaching which may occur due to the removal of the algal colony living in symbiotic association with the coral polyp. The poisonous pollutants can kill the coral polyps and this will leave many marine creatures devoid of shelter. Hence, some marine species will not be able to  copulate and reproduce. Thus they may become extinct.

Posted in Chemistry

How many hydrogen bonds can CH2O make to water

Hydrogen bonds are not like covalent bonds. They are nowhere near as strong and you can’t think of them in terms of a definite number like a valence. Polar molecules interact with each other and hydrogen bonds are an example of this where the interaction is especially strong. In your example you could represent it like this: 

H2C=O———H-OH 

But you should remember that the H2O molecule will be exchanging constantly with others in the solvation shell of the formaldehyde molecule and these in turn will be exchanging with other H2O molecules in the bulk solution. 

Formaldehyde in aqueous solution is in equilibrium with its hydrate. 

H2C=O + H2O <—————–> H2C(OH)2

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements

Posted in Chemistry

Calculate the number of atoms in 3mol helium

 The chemical formula of Helium is He. 

Question 1 : 

Given n = 1.11 x 10^-6 

To get no. of the particle, 
No of particle = no. of mole x Avogadro Constant 
p = n x NA 

1 mol of Helium = 6.02 x 10^23 

No of atoms = (6.02 x 10^23) x (1.11 x 10^-6) 
= 6.66 x 10^17 

………………………….. 

Question 2 : 

Given p = 4.29×10^21 

p = n x NA 
4.29 x 10^21 = n x (6.02 x 10^23) 
(4.29 x 10^21) / (6.02 x 10^23) = n 
n = Approximately 7.126 x 10^-3 

Hope the answer is right 🙂

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements

Literature

Have no time for reading? Now it’s possible to write a book review or a literature essay without reading a book. Order a custom-written paper from expert writers on our website.

Finance

If finance is not your cup of tea, there is no need to torture yourself. You can pay for essay and get completely original work from people who are fluent in this field of science at StudyHawks.

Computer science

Our computer science experts can deal with any type of academic paper. We will meet all the requirements and deadlines. Stop struggling and place an order with our paper writing service.

Psychology

While psychology may be an interesting subject, written assignments may have you puzzled. Don’t despair! Increase your chances to get better marks.

Law

Writing a law essay may be difficult, especially when you need to know the peculiarities of the legislative framework. Get essay from our law experts and stay satisfied.

Nursing

In the nursing course, you may have troubles with critical essays, annotated bibliographies, literature reviews, and other assignments. Here you can ask an essay helper to assist you with any nursing paper.

Sociology

We know that writing sociology papers can be quite exhausting. Forget about sleepless nights and get fast assistance with your essays here on this website.

Business

A good business essay or research paper should be written by an expert paper writer. Our website collaborates with qualified writers only. Put your assignment in our reliable hands.

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements