Answer:
Eukaryotic cells have a true nucleus, which means the cell's DNA is surrounded by a membrane. Therefore, the nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes, the cellular organelles responsible for protein synthesis.
Ribosomes are the sites in a cell in which protein synthesis takes place. ... Within the ribosome, the rRNA molecules direct the catalytic steps of protein synthesis — the stitching together of amino acids to make a protein molecule.
At a temperature of 408K, which gad will have the highest velocity?
Answer:
1 - NO2 at 339 K
2 - Ne at 371 K
3 - H2 at 371 K
4 - H2 at 425 K
Explanation:
Kinetic Energy is directly related to temperature; the higher the temperature the higher the kinetic energy. Kinetic energy is also equal to 12m⋅v2, so if we want a high velocity we want high temp and low mass. So let's list out approximate masses:
m(H2)≈2
m(NO2)≈46
m(Ne)≈20
So we have NO2 at 339 K, the lowest temperature out of the mix, and the highest mass out of the mix, so this is moving the slowest.
In contrast, we have H2 at 425 K, the highest temperature out of the mix, and the lowest mass out of the mix, so this is moving the fastest.
Now we have Ne and H2 at 371 K, since they are at the same temperature they have the same kinetic energy. But H2 is lighter than Ne so it must be faster. To quantify this mathematically, let's assume (this is wrong but just as an assumption for an example) KE at 371 K is 100:
100=12⋅m⋅v2
200=m⋅v2
√200m=v
So H2 is about v=10 and Ne is about v=√10≈3
So the order to recap is:
1 - NO2 at 339 K
2 - Ne at 371 K
3 - H2 at 371 K
4 - H2 at 425 K
Hope that makes it clearer!
Why is it dangerous to stand under tall trees and building during thunder?
What molecule represents this structure
A)NH4
B)NH3
C)NH4+
D)NH3+
Explanation:
As I think Option C is correct i.e. NH4+.
9. Assuming all other conditions are constant, what is the new pressure of a gas if the original pressure is 50 kPa and the Kelvin temperature is doubled?
a.100kpa
b.25kpa
or D.200kpa
Answer:
Option a (100 kPa) is the appropriate option.
Explanation:
The given value is:
Original pressure,
P₁ = 50 kPa
Let the new pressure be "x".
Now,
⇒ [tex]\frac{P1}{T_1} =\frac{P_2}{T_2}[/tex]
On substituting the values, we get
⇒ [tex]\frac{50}{T_1} =\frac{x}{2T_1}[/tex]
On applying cross-multiplication, we get
⇒ [tex]x = 50\times 2[/tex]
⇒ [tex]=100 \ kPa[/tex]
Thus the answer above is the right one.
Andrea is making a poster to show how the nervous system uses signals to send information through the body. These signals are sent through nerves. What parts should Andrea include in her diagram of a nerve as evidence to support her explanation?
neurons only
neurons, axons, and dendrites
dendrites, blood vessels, and muscle cells
axons, blood vessels, and connective tissue
Answer:b
Explanation:
what mass of oxygen reacted with the 8.40 grams of c
write one other example (other than the one in your note) of ore of the following metals
a) Aluminium
b) Lead
c) Iron
what cause a mass defect?
○A. The mass of a nucleus is larger than it should be.
○B. The mass of a nucleus cannot be accurately measured.
○C. Mass is converted to the energy binding a nucleus together.
○D. Mass is lost when a particle is released in a reaction.
Answer: Mass is converted to the energy binding a nucleus together.
Explanation: a p e x
Mass is converted to the energy binding a nucleus together cause a mass defect.Hence , Option (C) is correct.
What is Mass defect ?
The actual atomic mass is less than the predicted mass calculated by adding the masses of nucleons.
This additional mass is accounted for by binding energy that is released when a nucleus is formed.
When a nucleus is formed, some of the mass is converted to energy and this results in the mass defect.
Therefore, Mass is converted to the energy binding a nucleus together cause a mass defect. Hence , Option (C) is correct.
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How many sigma and pie bonds are in the following compound?
1.00
on
H:0:
| ||
H-C-C-H
1
H
For the first
H : O : H
Theres two bonds here
Each other are sigma
So 2Sigma bonds present
For the Second
I believe you wanted to write Ethyne....
In a triple bond... Theres 1sigma and 2 Pi bonds
Every single bond is a sigma bond
So
Counting all
we have
2Pi bonds and 3Sigma bonds
Jonathan raised 60 goats, then entered into a series of business transactions. He traded all the goats for sheep at an exchange rate of 5 goats for 7 sheep. Next, he exchanged all the sheep for hogs at a rate of 4 sheep for 2 hogs. How many hogs did he get?
Answer:
just awser
eeww
Explanation:
What happens to the rate constant as activation energy increases?
A. The rate constant decreases.
B. The rate constant levels off.
C. The rate constant does not change.
D. The rate constant increases.
Answer:
A. The rate constant decreases
Explanation:
i took the quiz on a pex and it was correct
Which base(s) is weaker than ammonia?
hydroxylamine, methylamine, and pyridine
pyridine only
hydroxylamine and methylamine
hydroxylamine and pyridine
Answer:
Hydroxylamine and pyridine
Explanation:
Just did it
How does an ecosystem benefit when leaves fall from a tree and decompose on the soil?
A. Nutrients are released into the soil.
B.Soil erosion decreases
C.Carbon dioxide is absorbed by the soil.
D.Soil temperature decreases.
When leaves fall from a tree and decompose on the soil it benefits the ecosystem as nutrients are released into the soil.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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b. What three products are necessary in order for a hydrocarbon combustion reaction to take place?
Explanation:
Description. Regardless of the type of hydrocarbon, combustion with oxygen produces 3 products: carbon dioxide, water and heat, as shown in the general reaction below.
What is a cell? ♀️
Answer:
Cell is defined as the smallest unit or basic unit of life.
the smallest part of a living thing that can carry out the activities needed for life. Basically the unit of all forms of life.
Explanation:
hope this helps in anyway :)
Which food is the most complete source of amino acids?
A. Bread
B. Fruit
C. Butter
D. Meat
Answer:
D.Meat
Explanation:
Meat-Most animals proteins are considered complete and high-quality.This includes red meat, poultry,and dairy products.
Amino acids are the molecules that make the protein and are essential nutrients. Meat is the best source that will have amino acids. Thus, option D is correct.
What are amino acids and proteins?Amino acids are the building blocks that make the macromolecule, a protein required for functioning, strength, and activities of the body. Amino acid-containing foods like eggs, meat, and soybeans are rich in proteins.
Amino acids and proteins are essential for body growth and repair that can be gained from poultry sources like eggs, meat, fish, cheese, quinoa, beans, etc. Bread, fruits, and butter are rich in carbohydrates.
Therefore, option D. meat is rich in amino acids.
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What type of compound is a salt
Answer: Salt is an ionic compound.
Explanation:
A compound formed by transfer of electrons from one atom to another is called an ionic compound.
For example, chemical formula of salt is NaCl (also called table salt).
Salt is formed when sodium (atomic no. 11) donates its one valence electron to chlorine (atomic no. 17). As a result, sodium ion and chlorine ion chemically combine together and form the compound NaCl.
Thus, we can conclude that salt is an ionic compound.
2L of hydrogen has an initial pressure of 750 mmHg, what is the final pressure in mmHg if the volume increases to 20 L with a constant temperature of 37 degrees C?
Answer: The final pressure is 75 mm Hg.
Explanation:
According to Boyle's law, at constant temperature the pressure of a gas in inversely proportional to volume.
Since, it is given that the temperature is constant. Hence, formula used is as follows.
[tex]P_{1}V_{1} = P_{2}V_{2}[/tex]
Substitute the values into above formula as follows.
[tex]P_{1}V_{1} = P_{2}V_{2}\\750 mm Hg \times 2 L = P_{2} \times 20 L\\P_{2} = \frac{750 mm Hg \times 2 L}{20 L}\\= 75 mm Hg[/tex]
Thus, we can conclude that the final pressure is 75 mm Hg.
Question 2 (1 point)
An object's gravitational force depends primarily on the object's
a
density
mass
b
oc
momentum
Answer: An object's gravitational force depends primarily on the object's mass.
Explanation:
According to the Universal law of gravitation, every object whether is it is having large r small mass tends to exert a force on every other object, therefore this force is known as gravitational force.
Formula to calculate gravitational force is as follows.
[tex]F = \frac{G \times m_{1} \times m_{2}}{r^{2}}[/tex]
where,
F = Gravitational force
G = Gravitational constant = [tex]6.674 \times 10^{-11} m^{3}/kg s^{2}[/tex]
[tex]m_{1}[/tex] = mass of object 1
[tex]m_{2}[/tex] = mass of object 2
r = distance between the centers of the objects
Therefore, it means that gravitational force of an object primarily depends on an object's mass.
Thus, we can conclude that an object's gravitational force depends primarily on the object's mass.
A tau lepton decays into an electron, an electron antineutrino and a tau neutrino. Write out this reaction in symbolic (equation) form and show that charge and lepton number is conserved. 2. What is the total number of quarks in a helium nucleus consisting of 2 protons and 2 neutrons
The equation in the symbolic form can be written as,
[tex]\tau \;- > e- + {\bar{\nu }} e + \nu\tau[/tex]
The total number of quarks in a helium nucleus consisting of 2 protons and 2 neutrons is 12 quarks.
What is the meaning of lepton?Any of a family of particles (such as electrons, muons, and neutrinos) that have spin quantum number ¹/₂ and that experience no strong forces.
The equation in the symbolic form can be written as,
[tex]\tau \;- > e- + {\bar{\nu }} e + \nu\tau[/tex]
Charge on the left side = -1
Charge on the right side = -1+0+0 = -1
As the charge on the electron antineutrino, [tex]{\bar{\nu }}[/tex] e and the tau neutrino, [tex]\nu\tau[/tex] are zero each.
Thus, charge on left side = charge on right side
Or, the equation is in accordance with charge conservation.
Lapton number of left side = 1
Laptop number of right side = 1-1+1 = 1
This is because, lapton number of the particles involved are,
Tau lapton, [tex]\tau[/tex]-1 = 1,
Electron, e-1 = 1,
Electron antineutrino, [tex]{\bar{\nu }}[/tex]e = -1,
Tau neutrino, [tex]\nu\tau[/tex]= 1,
Thus, lapton number of left side = lapton number of right side
So, the equation obeys lapton number conservation.
2.
The total number quarks in a helium nucleus which is composed of 2 protons (positively charged particle) and 2 neutrons (uncharged particle) is:
Since there 3 quarks in each nucleon, 4 nucleons would have a total of 12 quarks.
Just simply multiply 3 quarks by the number of nucleons:
So, 3 (quarks) x 4 (nucleons) = 12 quarks
Therefore, there are 12 quarks in 4 nucleons.
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Do frogs start their life cycle on land or water?
The answer is water because they lay eggs in water
Which of the following is an example of an environmental impact of agriculture?
high use of mineral resources
high use of water
high use of gold, copper, and silver
high use of rock supplies
Answer:
high use of mineral resources
Explanation:
brainliest pls
How many molecules of ethanol, C2H5OH, are contained in a 150. gram sample?
1.96 x 1024
46.0
6.02 x 1023
5.1 x 10-25
Answer:
1.96 × 10²⁴ molecules
Explanation:
Step 1: Given data
Mass of ethanol (m): 150. g
Step 2: Calculate the number of moles (n) corresponding to 150. g of ethanol
The molar mass of ethanol is 46.07 g/mol.
150. g × 1 mol/46.07 g = 3.26 mol
Step 3: Calculate the number of molecules in 3.26 moles of ethanol
To convert moles into molecules, we need Avogadro's number: there are 6.02 × 10²³ molecules in 1 mole of molecules.
3.26 mol × 6.02 × 10²³ molecules/1 mol = 1.96 × 10²⁴ molecules
Ito ang web browser na kapalit ng Internet Explorer! plsssss help naman ako epp po ito hindi ko po alam
Answer:
p o e t i c o
Explanation:
no lo entenderias
Part F
Using what you have learned in the above questions, calculate the minimum amount of water (in liters) that would be required to completely
dissolve 5.Og AgBr.
Using this same calculation, calculate the minimum amount of water (In liters) that would be required to completely dissolve 26 silver lons.
Answer: did you ever find the answer? I need part E, F, and G if you found them please!!!!! I’m begging, my school year ends in 30 minutes and I gotta get this submitted!!!!!!
Explanation:
how many moles of CO2 are in 35.0 liters of CO2 at STP?
Answer:
75300g ..........................
What is the pOH of .12 M HNO3.
A substance has a pH of 4. Is it an acid or a base?
In order to use the Ideal Gas Constant of 0.0821, what units must be used for volume, pressure, amount, and temperature?
Answer:
The value becomes 0.0821 L-atm/K⁻¹-mol⁻¹.
Explanation:
The value of gas constant is 0.0821.
We know that, the ideal gas law is as follows :
[tex]PV=nRT\\\\R=\dfrac{PV}{nT}[/tex]
Where
P is pressure
V is volume
T is temperature
In order to use the Ideal Gas Constant of 0.0821, the units are follows :
Volume = Litre (L)
Pressure = atm
Amount = mol⁻¹
Temperature = K⁻¹
So, the value becomes 0.0821 L-atm/K⁻¹-mol⁻¹.
What is the Molar mass of zinc
65.38 u (or g)
I just searched it up