What volume will 454 g (1 lb.) of H₂ occupy at 1.05 atm and 25.0°c

Answers

Answer 1

Answer:

Explanation:

V = 5.24 × 10^3L

Answer 2
V
=
5.24
×
10
3

L
Explanation:
We're asked to find the volume occupied by
454

g
of
H
2
at
1.05

atm
and
25

o
C
.
To do this, we can use the ideal-gas equation:
p
V
=
n
R
T
where
p
is the pressure, in units of
atm
(given as
1.05

atm
)

V
is the volume the gas occupies, in units of
L
(we'll be finding this)

n
is the number of moles of the gas present (we'll need to convert the given mass in grams to moles)

R
is the universal gas constant, equal to
0.082057
L

atm
mol

K

T
is the absolute temperature of the gas, in units of
K
(given
25

o
C
)

We need to do some conversions:
Let's find the number of moles of
H
2
present via the molar mass of
H
2
(
2.02

g/mol
):
454
g H
2
(
1
l
mol H
2
2.02
g H
2
)
=
225

mol H
2
The temperature in
K
is
25
o
C
+
273
=
298

K
Plugging in known values, and solving for the volume,
V
, we have
V
=
n
R
T
p
=
(
225
mol
)
(
0.082057
L

atm
mol

K
)
(
298
K
)
(
1.05
atm
)
=
5.24
×
10
3

Related Questions

What is the main function of white blood cells?
gathering around the site of the injury and sticking together to form a clot
transporting substances like sugars and digested proteins, vitamins, and hormones
Correct
fighting infectious agents like fungi, bacteria, and viruses
binding and transporting oxygen to cells

Answers

Answer:

to bring oxygen in the body and release carbon dioxide

Explanation:

Explosions may cause harm. They may also be useful. Can you name some examples of each?​

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Answer:

Nuclear explosions can cause harm no matter the circumstances. Other explosions caused by chemicals such as Amatol can help in the military; it can also help in the process of mining.

Answer:

Explosion will harm no matter what.

it will hurt the civilians on both sides.

Explosions or Nuclear Power is a chaos.

It may be useful for mining only with safety precautions

4. Explain how fusion is one of our sources of energy.

Answers

Answer:

La energía de fusión es la fuente de energía del sol y las estrella, la fusión es un proceso que ocurre dentro del sol, por esta razón la luz que vemos y el calor son el resultado de una reacción de fusión.

Before a star is born, the matter that will become the star exists as a what?

A: Cool, Dark Nebula

B: Black hole

C: Red Giant

D: Bright explosive supernova.

Answers

Answer:

A: Cool, Dark Nebula

Explanation:

Before a star is born, the matter that will become the star exists as a interstellar gas and dust.  The stars are formed as a result of the force of gravity compresses atoms in the interstellar gas. Then the fusion reaction begins. During this fusion reaction the temperature gets extremely high and all the material evolves into a hot bright star.

If an aquarium holds 80 l of water and contains 170 guppies, what is the approximate density of the guppy population?

Answers

The approximate density of the guppy population is 2 guppy/L.

What is Population?

The population may be defined as the number of individuals of the same species living in a particular area at a given time.

The capacity of the Aquarium to hold water = 80L.

The total number of guppies = 170.

Density = 170/80= 2.125.

Therefore, the approximate density of the guppy population is 2 guppy/L.

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What are some tropical animals

Answers

Answer:

Parrot, Toucan, sloth salt water fish, Jaguar, Reptiles, Harpy eagle and a Orangutans

That's all i got hope that helped

and if you need anything specific let me know i will get it

Which is NOT a homologous feature of
Phylum Porifera?
A. choanocytes- cells that sweep water into the body
B. have true tissues
C. amoebocytes- help support skeletal fibers
D. suspension feeders that filter food out of the water

Answers

The true nucleus is not a homologous feature of Phylum Porifera. So, it's B.

What do you mean by Porifera?

Porifera may be defined as superficial invertebrate animals that live in aquatic habitats that comprise the sponges.

Organisms belonging to animals, plants, and fungi only have a true nucleus. The members of the phylum Porifera majorly consist of sponges that have a system of suspension feeders that filter food out of the water.

The members of the phylum Porifera have choanocytes that specify the cells that sweep water into the body.

Therefore, the correct option for this question is B.

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Which of the following non-science subjects is often necessary to prepare for a career in science?

geography

art

history

math

Answers

Math science has a lot of math in it

The non-science subjects is often necessary to prepare for a career in science is Math. Option D. This is further explained below.

What is Math?

Math is simply defined as the branch of science that studies numbers, forms, and their relationships.

In conclusion, Math is a non-scientific topic that is frequently required to prepare for a career in science.

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The genetic diversity is the same as species diversity.

Answers

This was written as a statement, but I'll answer it as if it were a true or false question.

Answer:

False

Explanation:

Genetic diversity is the range of different traits within a species. Species diversity is the number of different species present in a place and the amount of each of those species. The difference is that genetic diversity refers to something within one species whereas species diversity refers to multiple species within a common location, or community.

The first fossils of animals with hard parts appeared about 541 million years ago. What percentage of geologic time does the fossil record represent

Answers

The percentage of geologic time does the fossil record represent 20%.

What are Fossils and Fossil records?

Fossils refers to remnants or traces once-living thing from the past. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood, oil, coal, and DNA remnants.

Fossil record is the compilation of all known and unknown fossils over a period of time.

The importance of fossil records includes:

1) Fossil records give scientists clues as to what the Earth was like millions of years ago.

2) Fossil records are used to determine how organisms alive today evolved.

3) It helps to understand how life in has changed over time.

Thus, percentage of geologic time does the fossil record represent 20%.

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What to expect after laser surgery for retinal tear?

Answers

Answer:

You may have some pain in your eye and your vision may be blurry for a few days after the surgery. Your eye may be swollen, red, or tender for several weeks.

Explanation:

Where are attached ribosomes found?

Answers

Answer:

Attached, or bound, ribosomes are found on the exterior of an organelle called the endoplasmic reticulum.

Chris wrote a few steps to describe how carbon circulates between the ground and living organisms.

Step 1. Plants absorb carbon dioxide in the air through photosynthesis.
Step 2. Dead plants are broken down by decomposers.
Step 3. Carbon stays in the ground for long-term storage as fossilized carbon.

If step 1 is removed, which statement best describes the effects of this missing step on the carbon cycle?

A. More carbon is stored in plants for long-term storage.
B. Less carbon is available for long-term storage in the ground.
C. Less carbon is stored in atmosphere instead of plants.
D. There are more fossil fuels available for energy use.

Answers

Answer:

B. Less carbon is available for long-term storage in the ground.

Explanation:

because then the carbon stays in the ground

Answer:

B. Less carbon is available for long-term storage in the ground.

Explanation:

If plants do not remove carbon from the air, it stays in the air and does not end up as fossilized carbon in the ground.

what is the difference between the pelvic born of human and pelvic born of primates​

Answers

The most noticeable differences between humans and other apes in the pelvis are: Ilium. In humans, the ilium (upper section of the innominate bone) is shorter and wider. It bends around the trunk in humans, but is flat against the rear of the trunk in apes.

Answer:

The ilium (top portion of the innominate bone) in humans is shorter and broader. It curves around the trunk, whereas in apes it is flat against the back of the trunk

Cells in the body use oxygen for cellular respiration. Select the two sentences that correctly describe cellular respiration.
ATP is produced.
ATP is consumed.
Carbon dioxide is absorbed.
Carbon dioxide is released.

Answers

Answer:

ATP is produced

Carbon dioxide is released

The two sentences that correctly describe the process of cellular respiration are as follows:

ATP is produced.Carbon dioxide is released.

Thus, the correct options for this question are A and D.

What is Cellular respiration?

Cellular respiration may be defined as a biological process through which a form of sugar which is known as Glucose is transferred into energy in the form of ATP in the presence of oxygen. This energy is required to accomplish metabolic activities.

The complete reaction of cellular respiration is as follows:

Glucose + Oxygen → Carbon dioxide + Water + Energy (ATP).

With the help of the reaction, it can be determined that glucose and oxygen are utilized while carbon dioxide and energy in the form of ATP are produced as products.

Therefore, ATP is produced and Carbon dioxide is released are the two sentences that correctly describe the process of cellular respiration. Thus, the correct options for this question are A and D.

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Which answer a b c or d.

Answers

Answer:

d

Explanation:

I think the answer is d but I'm not sure a can also be

Label this diagram with these 4 words

Answers

i think this should help

What do we call the part of a leaf that
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stomata?
A. guard cell
B. stem
C. vein
D. blade

Answers

Answer:

A.

Explanation:

it should be the guard cell. It is this because, the guard cell is supposed to almost close or move in and out depending on the type of weather or climate.

In photosynthesis, carbon dioxide gas is reduced and combined to form glucose. This is an example of

Answers

Answer:

This is an example of: Anabolism

"Helicopter" seeds called samaras are produced on maple and ash trees. How are these seeds dispersed?
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O carried by water
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Answers

Carried by wind because they “fly” through the air and spread to new locations. Helicopters use fly so it can be related to how the seeds would be transported

Describe how natural selection can occur in a population.​

Answers

Answer:

Natural selection occurs when individuals with certain genotypes are more likely than individuals with other genotypes to survive and reproduce, and thus to pass on their alleles to the next generation.

Explanation:

If a sudden genetic mutation in the birds that feed on these frogs made them able to consume any amount of the poison with no harm to them, it is most likely that

Answers

If a sudden genetic mutation in the birds that feed on these frogs made them able to consume any amount of the poison with no harm to them, it is most likely that because frogs will be less poisoned.

What are the other mutations in birs?

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The frogs which can be least toxic and much less conspicuous now might continue to exist higher than people who have greater poison.

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If a sudden genetic mutation in the birds that feed on these frogs made them able to consume any amount of the poison with no harm to them, it is most likely that the frogs that are least toxic and less prominent now would survive better than those that have more poison.

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Mutations may be defined as the sudden, stable, and inheritable changes in the genetic material of an organism.

Therefore, it is well described above.

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Astronomy

With all the interaction, competitiveness, and collaboration among countries around the globe with space travel, what role do you think politics plays (or has played) in these relationships regarding space travel? Explain and discuss.

Answers

Politics plays an active role in relation to space travel, as an example we can mention the space race during the Cold War.

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Therefore, the policy is an instrument capable of influencing space travel in order to generate collaboration and competitiveness between countries, being a positive instrument for further development in space exploration.

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Answer:  Politics plays an active role in relation to space travel, as an example we can mention the space race during the Cold War. The space race was the dispute for hegemony in space exploration between the United States and the Soviet Union in the period from 1957 to 1975 during the Cold War, which was a geopolitical conflict. This period was marked by major technological developments.

Explanation:

Which level would a pig be placed in an energy pyramid/ food chain?.

Answers

Answer:

Once the students have constructed their food webs they will read an article on Feral Pigs and how they are affecting our ecosystem.

What are the "two sides" of the
Golgi body?

Answers

Cis and trans face

Explanation:

Cis and trans face of Golgi apparatus are two sides of Golgi apparatus. Cis face receives vesicles from ER. These vesicles fuse with Golgi apparatus and form new cisternae. Vesicles filled with processed proteins and lipids exit from the trans face of the Golgi apparatus.

Using sentences, describe three specific examples of the interconnectedness of the organisms found in Gorongosa National Park.

Answers

Located at the southern tip of Africa's Great Rift Valley, Gorongosa National Park is home to an astounding diversity of animals and plants. Once known as "the place where Noah left is ark", wildlife populations were decimated by nearly two decades of civil war.

Conservation efforts to restore the park are currently underway, with the support and cooperation of many organizations.

How Technology is important in order to conduct research on lions in Gorongosa national park?

Technology is important in order to conduct research on lions in Gorongosa national park. Studying lions is not that easy, however, applications of technology like satellite collars that demonstrate complete information on the daily activity of lions has greatly developed the study of lions.  

Thus, most notably that of the Carr Foundation/Gorongosa Restoration Project.

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I will mark brainliest!!

7th grade!

Describe the structure and function of neurons. In your response, discuss the three types of neurons cells.


Answers

Answer:

Sensory neurons, Motor neurons, and Interneurons

Explanation:

Sensory neurons get activated and stimuli from their environment

Motor Neurons Transmit from the brain and spinal cords where they then go to the muscles, glands and many organs in the body

interneurons transmit impluses between the sensory and motor neurons

A type of fuel made from corn or sugar is ______.
A) biomass
B) ethanol
C) geothermal
D) geyser
E) peat

Answers

Answer:

B) Ethanol.

Explanation:

A type of fuel made from corn or sugar (but primarily from corn) is ethanol. ethanol is typically blended into gasoline, though it is available as a stand alone. It is also used for many things, including but not limited too gasoline, chemicals, and alcoholic beverages.

~

Will give brainliest for the first answer!!!!
pls help its an emergency!!!!!!!!!!
can someone help fill in this table and the questions thanks so much

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During tubular reabsorption, most of the water, glucose, and ions in the glomerular filtrate are reabsorbed into the blood whereas urea is not.

What is tubular reabsorption?

Tubular reabsorption refers to.the process whereby minerals and water are reabsorped from the glomerular filtrate into the blood.

The renal artery carries mineral rich, oxygenated blood from the heart to the kidneys whereas the renal veins carry deoxygenated blood from the kidneys back to the heart.

Blood in the renal arteries contains red blood cells, white blood cells, large blood proteins, glucose, water, ions, and urea.

Filtrate in the kidney tubules contains water, glucose, ions, and urea.

Filtrate not reabsorbed is urea.

Urine contains urea, ions and water.

Blood in the renal veins contains red blood cells, white blood cells, large blood proteins, glucose, water, and ions.

Therefore, in the process of tubular reabsorption, most of the water, glucose, and ions in the glomerular filtrate are reabsorbed into the blood whereas urea is not.

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Cacti typically grow in very dry climates with infrequent rainfall. when it does rain, the rain usually only penetrates a few inches into the soil. which adaptation is most likely to help a cactus survive in the dry climate? thick xylem tissue to transport sugar leaves that have a thin cuticle extensive shallow roots that absorb water more dermal tissue for food storage

Answers

Answer:

extensive shallow roots that absorbs water

Answer: the answer is C..Thank me later good luck on life

Explanation:

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