7. Hydrogen fuel cells combine hydrogen and oxygen to produce water and energy. Assume 1 kg of fuel is used, and the mass of the water produced is 1.10 x 10-11 kg. How much energy is produced by this fuel cell? (Hint: Use E = mc2.)

Answers

Answer 1

Answer:

this is a hard one

Explanation:


Related Questions


Which type of transport moves sugars around the plant?

Answers

xylem I think. It might be the phloem. Correct me if im wrong.

The correct answer is active transport through phloem, since sugar is transported through this type of vessels

What is the genotype of an individual with type O blood?

Answers

Answer:

Genotype OO

Explanation:

cold ocean currents generally come from

Answers

Warm ocean currents originate near the equator and move towards the poles or higher latitudes while cold currents originate near the poles or higher latitudes and move towards the tropics or lower latitudes. The current's direction and speed depend on the shoreline and the ocean floor.

What is the answer to this?

Answers

Explanation:

carbohydrates

hope it helps

there are four kids one has blue eyes and blonde hair the other three have brown eyes and blonde hair explain what happened​

Answers

Explanation:

The child may have taken the recessive genes from his parents

May you please help me

Answers

i’m pretty sure it’s chloroplasts:)

Some transcription signals are located thousands of base pairs upstream of the gene they regulate. How does the distant signal initiate transcription

Answers

Answer:

enhancer sequences bind to transcription factors to increase the likelihood of transcription  

Explanation:

Enhancers are short DNA regions (50–1000 bp) that may be localized upstream and downstream from the transcription start sites of the gene. It has been shown that enhancers can be localized several kilobases (30-100 kb) either 5' or 3' of the gene. These sequences bind to proteins (generally transcription factors) in order to alter the 3D structure of the DNA, thereby increasing the likelihood of transcription.

which event is most likely to lead to a heat wave HELP

Answers

Answer

It would be A high pressure system lingering over an area or A

hope i helped

Answer:

A

Explanation:


If the lionfish population keeps rising, what would be the possible effect on the trophic levels of
the ecosystem?

Answers

Answer:

As lionfish populations grow, they put additional stress on coral reefs. For example, lionfish eat herbivores, and herbivores eat algae from coral reefs. Without herbivores, algal growth goes unchecked, which can be detrimental to the health of coral reefs.

Explanation:

The lionfish are eating other consumers, so the native consumer populations are dwindling. This decrease can have a ripple effect. Larger predatory animals may not have enough food to eat because the native species are decreasing.

What is the connection between cancer and cell replication (explained in 1 paragraph)?​

Answers

Answer:

The connection between cell replication and cancer is that cancer is caused by a malfunction in cell replication. Cells can malfunction while replicating and cause the cell to not stop replicating cells leading to cancer.

Explanation:

Please help. thank u.​

Answers

Answer:

a

Explanation:

For a deer study, each fawn found was fitted with a tag that monitors its movements and habits. The information is
then sent to scientists to study migration patterns.
Which best describes this use of technology?

Answers

Answer:

C. The improving technology has increased data collection and monitoring

Explanation:

Option C is the best that describes this use of technology.

In our world today, technology is helping to improve the way we do things. From data collection, manufacturing, designing, fabrication, observation, etc., technology has played a vital role. It has helped to improve the standard of living and makes work faster and easier.

From the excerpt, we discover that technology was used in deer study and it helped to increase data collection and the the way the fawn was monitored.

Answer:

C

Explanation:

hope this and have a good day

What are stalagmites and stalactites, and how do they form?

Answers

Stalactites grow down from the cave ceiling, while stalagmites grow up from the cave floor. ... As the carbon dioxide is released, calcite is precipitated (redeposited) on cave walls, ceilings and floors. As the redeposited minerals build up after countless water drops, a stalactite is formed.







Hope this helps :)

Which process removes carbon from the atmosphere and then it into glucose using the energy from sun

Answers

Answer:

Explanation:

Wild guess. Photosynthesis

Which organelle is not found in animal cells?
A.mitochondrion
B.ribosome
C.chloroplast
D.smooth endoplasmic reticulum

Answers

Answer:

Chloroplast

Explanation:

Chloroplast contain chlorophyll and is used during photosynthesis. Only plants conduct photosynthesis to get energy. Animals eat to get their energy.

smooth endoplasmic reticulum

Explanation:

because in biology a continues member system that forms a series of flatterned scas with cytloplasm of eukaryotic and cells serves multiple function

c) Binary fission and multiple fission
differentiate

Answers

Answer:

Binary fission

1. Forms two daughter individuals

2. Divides only once

3. No residue is left

4. Takes place in favourable conditions

5. Immortality is present

Example: Amoeba reproduces by binary fission

Multiple fission

1. Forms many daughter individuals

2. Divides repeatedly

3. Residue is left

4. Takes place in favourable as well as unfavourable conditions

5. Immortality is absent

Example: Plasmodium reproduces through multiple fission

Binary fission happen in favorable condtion where nucleus of (ex : amoeba) divides by mitosis giving two daughter cells and the mother cell disappears while multiple fission can happen in both favorable and unfavorable the nucleus undergoes repeated division to produce a large number of nuclei Each nucleus along with little bit of cytoplasm forms a membrane around it

Mary, who has type O blood, is expecting a child with her husband, who has type AB blood. A blood type test reveals that the baby has type O blood. Is her husband the father of her child? How can you tell?

Answers

Answer:

No. If the parents are AB and O, the offspring can only be A or B.

Answer:

no.

Explanation: If you use a T chart you can see that the blood type must be either A or B.

The tongue is an example of an organ that assists in the process of digestion. which of the following best describes the level of structural organization for organs like the tongue?


A. It is less complex than a tissue


B. It is more complex than an organ system


C. It is less complex than a cell


D. It is more complex than a tissue

Answers

Answer:

C

Explanation:

The level of structural organization for the tongue is that it is more complex than a tissue. So the correct option is D.

What is a tongue?

In most vertebrates, the tongue is a muscular organ on the floor of the mouth that may move in a variety of ways. It is extended and specialised in grabbing insect prey in some animals (like frogs).

While cats and certain other animals use their tongues as tools for grooming and cleaning, some reptiles' tongues serve largely as sensory organs.

The tongue is an essential auxiliary organ in chewing and swallowing, helps mammals create negative pressure in the oral canal to permit sucking, is a key carrier of taste receptors, and helps humans speak.

The mammalian tongue is formed of a complex of striated, intertwined muscles, fat, and glands, all coated in mucosal surfaces. Humans often have their front tongue ends and margins in contact with their teeth, which facilitates communication and swallowing.

Therefore the correct option is D.

Read more about the tongue, here

https://brainly.com/question/28211852

#SPJ2

during breathing cycle what is the advantages of residual volume of air in lungs​

Answers

During breathing cycle, the residual volume of air in lungs provide the advantage as it prevents the lungs from collapsing. Also, due to the presence of residual volume, there is sufficient time for oxygen to be absorbed and for the carbon dioxide to be released during breathing.

Hope it helps!

An experiment is being carried out to observe the melting of ice. Heat energy is being supplied at a constant rate. The temperature of the ice is recorded at different intervals of time. After some time, the observed values of temperature become constant even though heat energy is supplied to the ice. Explain what is happening in this situation.

Answers

Answer:

thoughout the experiments the ice starts showing sings of melting

Explanation:

HELPPPP DONT ANSWER FOR FRE POINTS

A molecule consists of two or more atoms bonded together, while a compound consists of two or more __________________ atoms bonded together.
Choose one answer.
a. Similar
b. Different
c. Ionized

Answers

Answer:

B. different

Explanation:

trust me bro

Answer:

IDSKKK

Explanation:

Why does a cell membrane have to be made of two layers, rather than just one?

Answers

Answer:

the cell membrane is hydrophobic and will not interact with water phospholipids form a two-layer cell membrane that separates fluid within the cell from the fluid outside of the cell.

HELP ASAP PLS!!!! Which option identifies the most likely the cause of injury in the following scenario?
Sarah, who just turned 70, broke her elbow playing ice hockey with the neighborhood woman's league.
O Since menopause, Sarah's levels of the hormone testosterone have increased
O Since menopause, Sarah's levels of the hormone estrogen have increased.
O Since menopause, Sarah's levels of the hormone testosterone have dropped.
O Since menopause, Sarah's levels of the hormone estrogen have dropped.

Answers

Answer: Since menopause, Sarah's levels of the hormone estrogen have dropped.

Explanation:

The most likely cause of injury in the following scenario is that because of the menopause, Sarah's levels of the hormone estrogen, which is also known as a female hormone, have dropped and because of that she is playing ice hockey with others and since she did not play it before, she broke her elbow.

She broke it because she was inexperienced with it and if she has played it before menopause she could not break it.

what is equilibrium

Please answer
And if help needed I am here to help anyone ☺️​

Answers

Equilibrium is when the sum of the forces is zero.

if a body ,under the  action of  a number of forces ,is at rest or moving with uniform velocity ,it is said to be in equilibrium.or simply if a body is moving with uniform velocity it is said to be in equilibrium.

Briefly explain the difference between "breath-
ing" and "respiration".

Answers

Answer:

respiration takes place in the cells and breathing is an action where you inhale and exhale from you airways

Answer:

There are the same thing. Respiration is the process of breathing out and in. "breath-ing" could be determined as breathing in or out, maybe both. There aren't any differences that i know of.

Which of the following is NOT occurring during interphase?

Answers

Answer:

The nucleus replicates.

Explanation:

Replication of the nucleus does not happen during interphase.

Hope this is correct!

How much natural gas is used in the United States each year? How does this compare with oil and coal use?

Answers

Answer:In 2019, the United States consumed about 31.01 trillion cubic feet (Tcf) of natural gas.

Explanation:

Indicate whether each source is reliable or unreliable. A scientist who studies dinosaurs presents her research on velociraptors at a science convention. unreliable A chemistry teacher discusses plant cells on his personal blog. unreliable An advertisement for weight-loss pills in a magazine claims that you will lose 10 lbs in one week. An article discusses photosynthesis in an encyclopedia. An article discusses salmonella on the Centers for Disease Control and Prevention (CDC) website.

Answers

Answer:

A scientist who studies dinosaurs presents her research on velociraptors at a science convention. reliable

A chemistry teacher discusses plant cells on his personal blog. unreliable

An advertisement for weight-loss pills in a magazine claims that you will lose 10 lbs in one week. unreliable

An article discusses photosynthesis in an encyclopedia. reliable

An article discusses salmonella on the Centers for Disease Control and Prevention (CDC) website. reliable

Explanation:

Two important things to look out for in order to establish the reliability of a written work is to

Check the sourceCheck the author

The advertisement does not come from a trusted source hence it is an unreliable information. The chemistry teacher is not an expert in biology hence the article on plant cells is unreliable.

The CDC is a credible organization and is well qualified to discuss matters surrounding disease outbreaks hence a publication on their website is reliable. An encyclopedia is authored by experts in a field hence its contents are reliable. A scientist who studies dinosaurs is an authority hence his/her presentation at a seminar is reliable information.

Answer:

1.reliable

2.unreliable

3.unreliable

4.reliable

5.reliable

Explanation:

What would you expect to happen to the air pressure as a storm approaches?

Answers

Answer:

I would expect it to go down or low pressure to happen

Which organ does not fit with the rest?

Group of answer choices

nerves

skin

brain

spinal cord

Answers

its brain
Like the rest of our organs, the brain undergoes its own aging process. And yet the majority of adults don't experience major cognitive decline—the kind that severely limits their ability to live independently—over time. That's because the brain is one of the most resilient organs in the body.
The organ that does not fit with the rest is skin
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