Oxygen molecules are sixteen times as massive as hydrogen molecules.

At the same temperature, which type of molecule would you expect to move faster?

Answers

Answer 1

Answer: hydrogen molecules.

Explanation: in same temperature molecules have same average kinetic energy.

You can estimate it solving E = 3/2 kT = 1/2 mv². Constant k is Boltzmann constant.

Lighter molecule has greater speed


Related Questions

Which is a characteristic of arthropod?

A. moist skin
B. feathers
C. scales
D. joint-legged​

Answers

Answer:

D joint legged like butterfly

Answer:

D.joint legged

Explanation:

D.joint legged

During transcription, initiation involves the attachment of RNA polymerase to the promoter and the start of RNA synthesis.
Group of answer choices

True

False

Answers

Answer:

true

Explanation:

True. During transcription, initiation is the first step in which RNA polymerase binds to the promoter region of the DNA molecule.

The promoter is a specific sequence of nucleotides located upstream of the gene that signals the start site for transcription. RNA polymerase recognizes and binds to the promoter sequence, forming a complex called the transcription initiation complex.

Once the transcription initiation complex is formed, RNA synthesis begins. RNA polymerase unwinds the DNA double helix in the region of the gene, exposing the template strand. It then catalyzes the synthesis of an RNA molecule by adding complementary RNA nucleotides to the growing RNA chain according to the base pairing rules (A-U and G-C).

So, the statement "During transcription, initiation involves the attachment of RNA polymerase to the promoter and the start of RNA synthesis" is true. Initiation is indeed the process where RNA polymerase binds to the promoter and initiates the synthesis of an RNA molecule based on the DNA template. This is a crucial step in the process of transcription, as it determines where and when the transcription of a specific gene will occur.

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When both lactose and glucose are available to E. coli, which part of the lac operon regulation assures that glucose will be metabolized first? When both lactose and glucose are available to E. coli, which part of the lac operon regulation assures that glucose will be metabolized first? Permease allows lactose to enter the cell when lactose enters the cell. The repressor binds to the operator in the absence of lactose. The repressor cannot bind to the operator in the presence of lactose. RNA polymerase transcribes the lac operon to make a single RNA molecule. CAP binds to cAMP and then to the promoter only in the presence of low glucose.

Answers

Answer:

CAP binds to cAMP and then to the promoter only in the absence of low glucose

Explanation:

When both lactose and glucose are available to E. coli, the part of the lac operon regulation that assures that glucose will be metabolized first is

CAP binds to cAMP and then to the promoter only in the absence of low glucose

Lactose is a type of sugar that is found naturally in milk produced by mammals and Glucose is a monosaccharide made mostly by plants during photosynthesis

which of the following are parts of the biosphere. choose all that apply

river
deer
tree
mountain
mushroom​

Answers

Mountain, tree, river

Match the vocabulary with the correct description.
Column A
Column B
1.
axis
a. angular distance north and south of the equator
2.
rotation
b. an imaginary line that an object spins or revolves around
3.
revolution
c. a force that exists between any two objects that have
mass
4.
latitude
d. the orbiting of an object around another object
5.
gravity
e. the spinning of a celestial body, such as a planet, around
an axis

Answers

Answer:

Axis - B

Rotation - E

Revolution - D

Latitude - A

Gravity - C

Explanation:

The axis is the line that a body spins on. The axis will line up with the north and south poles. For Earth, the axis is tilted, which is why seasons exist.

The definition of rotation is "the action of rotating around an axis or center." So, rotation is the spinning of a body on its axis. On Earth, one rotation is equal to one day.

Revolutions are when a body spins around another. For Earth, one revolution around the sun is one year

Latitudes are invisible lines that separate the world into degrees from North to South. They are also called parallels.

Gravity is the force that keeps things together. Large masses have gravity that attract other masses.

Which is the most likely outcome for a species of fish that lacks the genetic variation necessary to adapt to a changing ocean environment?
A. Become extinct over time
B. Begin to reproduce asexually
C. Develop mutated cells
D. Develop a resistance to disease

Answers

A. to become extinct over time

What process involves rainwater filtering through soil?

Answers

I believe it’s called perculation

HELP PLEASE 30 POINTS!

Answers

Answer:

It becomes more smaller in tension because that is what contract means, they take different forms which are smaller such as what the question example gives you, when you bend your biceps they become smaller in length.

Hope this helps!

As a genetic counselor, you advise couples about the possibility of genetic disease in their offspring. This morning you met with an engaged couple, both of whom are phenotypically normal. The man, however, has a brother who died of Duchenne-type muscular dystrophy, an X-linked condition that results in death before the age of 20. The allele responsible for this disease is recessive. His fiancee, whose family has no history of the disease, is worried that the couple's sons or daughters might be afflicted.

Requied:
a. How would you advise this couple?
b. The sister of this man is planning to marry his fiancée's brother. How would you advise this second couple?

Answers

Answer:

a. This couple should not worry.

b. This couple should worry.

Explanation:

a. The man should not be worried. This is because he is normal (phenotypically).

b. They should be worried because the sister of the man can be a carrier of the recessive allele. If she was a carrier, then half of their male children can be affected.

How do different parts of the nervous system work together to help you perceive and react to the environment?

Answers

A neuron has three main parts. The cell body directs all activities of the neuron. Dendrites extend out from the cell body and receive messages from other nerve cells. An axon is a long single fiber that transmits messages from the cell body to the dendrites of other neurons or to other body tissues, such as muscles.
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a. Describe the difference in the arrangements of the anthers and stigmas in the pin-eyed and thrum-eyed primrose.
b. Which part of the insect's body would touch the stigma in a pin-eyed primrose and a thrum-eyed primrose?
c. Explain how this will help to ensure that cross-pollination takes place.
d. Self-pollination does sometimes occur in primroses. Would you expect it to occur more often in pin-eyed or thrum-eyed primrose? Explain your answer.

Answers

Answer:

I dont know if i am right what about A D and B

Answer:

A-There are two different types of primrose flowers: some have a pin-eyed stigma which rises above the pollen-bearing anthers, while in thrum-eyed flowers the stigma is enclosed by the anthers. Long-tongued insects like butterflies and bee-flies visit the flowers to reach the nectar at the base of the flower-tube.

B-An insect visiting a pin-eyed flower first collects pollen from the lower anthers on the middle of its proboscis, which it then transfers to the stigma in a thrum-eyed plant, which is positioned lower down the flower tube. It's an ingenious adaptation which ensures that primroses will be successfully cross-pollinated.

C-Many plants have ensured that cross-pollination takes place by deliberately keeping male and female flowers on the same plant out of sync. In this corn plant, the pollen is ripe long before the stigmas are receptive; therefore, the only way the ovules can be fertilized is by the pollen from another corn plant.

D- When they visit a thrum-eyed plant, the pollen from the anthers, which are near the top of the tube at the entrance, attaches to the top of the insect’s proboscis.  When it visits a pin-eyed flower and probes deeply for nectar, the pollen is in a perfect position to be transferred to the higher stigma of this flower.  An insect visiting a pin-eyed flower first collects pollen from the lower anthers on the middle of its proboscis, which it then transfers to the stigma in a thrum-eyed plant, which is positioned lower down the flower tube.  It’s an ingenious adaptation which ensures that primroses will be successfully cross-pollinated.

Explanation:

Hope this helps!

Question 4 (1 point)
What pattern occurs every 365.26 days on Earth? Choose all correct answers.
Earth rotates around the Sun.

Earth revolves around the Sun.
C с
Earth's degree of axis tilt changes.
d
Earth orbits around the Sun.

Answers

Answer: D

Why? The earth orbits the sun and it does this over the span on 365.26 days

Hope this helps

if you wanted to determine the temperature of a star, which measurement would you make? refraction Doppler shift emission spectrum absorption spectrum (K12 question also its Earth Science)

Answers

Answer: Emission Spectrum

Explanation:

K12 4.17 Quiz: Electromagnetic Spectrum

2. Which contains the other, cell membrane or phospholipid?

Answers

Answer:

Cell membrane contains phospholipid

Explanation:

Part of the cell membrane is made up of the phospholipid bilayer, which consists of two layers of phospholipids.

the right of a court to choose to do or not to do something particularly in relation to sentencing an offence is known as​

Answers

Answer:

I HOPE IT WILL HELP U

Explanation:

guidelines

Please give an awesome explanation.Ky answer if you're very good at Science/Biology.Please don't put a link to a website.

Explain how competition for food can cause natural selection.​

Answers

Answer:

Competition for food happens when there is a limited amount of food resources available. The members of a species that eat that food who are best adapted to access the food are more likely to reproduce and pass on their genes to the next generation.

For example, we have a bird feeder with a narrow opening for food. The small-headed birds can reach the food, the bigger-headed birds cannot. If this was the only food source for this area, then over time, there would be more smaller-headed birds than large-headed birds, due to the competition for food and success/lack of success.

Where do winds come from?

Explain your answer.''

Answers

the energy that drives wind originates with the sun which heats the earth unevenly creating war spot and cool spots

Answer:

The energy that drives wind originates with the sun, which heats the earth unevenly, creating warmsports and cool sports. Two simple examples of this area sea breezes and land breezes. Sea breezes occur when inland areas heat up o sunny afternoons.

Acid precipitation harms vegetation and reduces soil quality. Which of these is most responsible for acid precipitation?
a)decrease in ozone levels
b)burning of fossil fuels
c)changes in the atmosphere
d)changes in the climate

Answers

Answer:

b burning of fossil fuels

Explanation:

The Topic is Coal Production. What trend would you predict for the next ten years for each region? Western Interior and Appalachian

Answers

Explanation:

The new trend will probably be the technology that's in that certain year. As the trend in the modern days is all electronics or will have to do with electronics.

A taxonomic key is a tool used to identify an unfamiliar organism.

a. True
b. False

Answers

It is probably true

Is the following sentence true or false? Liquid magma is formed when small amounts of mantle rock melt?

Answers

Answer:

Absolutely True!

Explanation:

why is cancer considered a genetic disease of somatic cell?​

Answers

The transformation of a normal cell into a cancer cell takes place through a sequence of a small number of discrete genetic events, somatic mutations: thus, cancer can be regarded properly as a genetic disease of somatic cells

which two body system interact to expel the waste product carbon dioxide​

Answers

Answer:

The circulatory system is responsible for bringing food and oxygen to every cell in your body. The respiratory system is responsible for carrying oxygen and carbon dioxide in and out of your body. The excretory system is responsible for removing waste from your body.

Explanation:

- Eijiro <3

Answer:

Explanation: you are wrong because i was putting that answer into my class it i failede so none of your advice helps i give no stars for this

The scientific evidence that scientists use in supporting or critiquing the conclusions of experiments usually consists of

A. raw data.
b. outtlier data
c. precise data
d. summarized data​

Answers

Answer:

D

Explanation:

summarized data

Data that summarize all observations in a category are called summarized data.

Would like Brainliest no required tho.

Which of these is a difference between DNA and RNA?
DNA is found in the nucleus; RNA is never found in the nucleus.
DNA consists of five different nucleotides; RNA consists of four different nucleotides.
RNA is double-stranded; DNA is single-stranded.
DNA contains thymine; RNA contains uracil.
In DNA, adenine pairs with guanine; in RNA, adenine pairs with thymine.

Answers

Like DNA, RNA is made up of nucleotides. There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.

A plant with green seed pods (GG) is crossed with a plant with yellow seed pods (gg).
Draw a Punnett Square on a piece of paper and determine the Genotype of the
offspring.

Answers

Draw a punnet square. On one side do gg and the other GG. The answer should be Gg Gg Gg Gg

what would never be part of an mRNA strand?

Answers

Answer:

Uracil

Explanation:

Thymine would never be part of an mRNA strand.thus, option A is correct.

What is mRNA?

Messenger RNA (mRNA), molecule in cells that carries codes from the DNA in the nucleus to the sites of protein synthesis in the cytoplasm (the ribosomes).

It was also known that there are only four nucleotides in mRNA: adenine (A), uracil (U), guanine (G), and cytosine (C). Same three nucleotide base is also present in the DNA except thymine. Thymine is replaced with uracil in case of RNA. thus option A is correct.

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Determining the order of events and the relative age of rocks by examining the position of rocks in a sequence is called____
A;bsolute dating
B:radiometric dating
C relative dating
D carbon dating

Answers

The answer is c.relative dating
C. Relative dating

Which of the following statements about phylogenetic trees is not true?

A. They can show which groups of organisms are most closely related.
B. They can show which groups of organisms are more advanced than other groups.
C. They can show which group of organisms diverged longest ago.
D. They can show predictions of evolutionary relationships from the analysis of shared heritable traits.

Answers

Answer:

B. They can show which groups of organisms are more advanced than other groups.

They can show which groups of organisms are more advanced than other group is not true about phylogenetic tree.

It is used to identify the phylogenetic relationship between the organisms.It show which group of organism diverged longest ago.

What is phylogenetic tree?It is a diagram that depicts the lines of evolutionary descent of different species, organisms, or genes from common ancestors.It is based upon similarities and differences in their physical or genetic characteristics.

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PLEASE HELP TAKING TEST NOW!!!!!!!!!!!!!! What is the main factor causing the salinity of the Everglades to change? (1 point)
O snake populations
O flood control levees
O climate change
O transportation canals

Answers

Answer: snake populations

Explanation:

Other Questions
Select the correct answer.Which type of galaxy is the Milky Way?A.elliptical B.spiralC.irregularD.lenticularNext 1. What is the symbol for atomic mass? What are the units of atomic mass in terms of atoms? 2. What is the symbol for molar mass? What are the units of molar mass? 3. What is the atomic mass of iron, with units? 4. What is the molar mass of iron, with units? 5. What is formula mass? What are the units of formula mass? 6. What is the formula mass of sodium bicarbonate, with units? 7. What is the molar mass of sodium bicarbonate with units? 8. What is the molar mass of water? 9. What is the molar mass of ammonia, NH3? 10. What is the molar mass of lithium oxide? 11. What is the molar mass magnesium bicarbonate? 12. What is the molar mass of cobalt(III) carbonate? After World War 2, the Korean peninsula was split in half, with North Korea becoming aA. Capitalist dictatorshipB. Communist democracyC. Communist dictatorshipD. Capitalist democracy What comes to mind when you think of WW2? What lessons were learned on this day in Charlotte? What lessons can we still learn today from historical photographs such as this image of Dorothy Counts? For what value of a is - 4a zero of the polynomial p(x) = x ^ 2 - x - (2a + 2) ^ 2 Ashley started a savings account with Chase bank. She initially put in $200 in her account. If she was granted a .08% semi-annually, how much would she have in her account after a year? A teacher chooses a student at random from a class of 25 boys. Which BEST describes the probability that the student chosen is a boy? A) impossible B) unlikely C) likely D) certain ________________ is feeling secure enough to express how you feel, and being willing to listen to each other.A. Good communicationB. Time togetherC. MarriageD. Physical abuse Plz help me i need this done.i will give 3 extra points if it is correct Which graph represents this system? y=5x+3 3 y=zx-1 Given f(x)=(0.5)^x, give the rule for g(x) if it is f(x) shifted to the left 1 unit, down 3 units, and reflected over the x-axis Plz help me thank you. 4 cm of the ice tray 15.000 at 9 percent interest 10x5+4to the power of 2+(5+30 divided by 10 15. It is not necessary,a. sentenceb. fragment The value of almost everything you own assets such as a car computer oar house depreciates goes down overtime when an asset value decreases by a fixed amount each year the depreciation is called straight line depreciation suppose your truck has an initial value of $12,400 depreciates $820 per year write an equation illustrates this function if you plan to keep your truck for seven years and determine the value of the truck at the end of this. Period let v represent the dependent variable in T represent the independent variable Three percent of the students at Midwood High School are left-handed. There are 700 students at Midwood High School. How many students at Midwood High School are left-handed?A.21 studentsB.210 studentsC.140 studentsD.12 students PART A: Which statement identities central idea of the text?~i need the answer ASAP please Kyle fills the candle mold with liquid candle wax. Ifthe candle has a volume of 99 cubic inches, what is thewidth of the mold?