Answer:
I believe it is 3. All of these.
Explanation:
Not all organisms hold their genetic code (DNA) inside a nucleus. In fact, some organisms don't have a nucleus at all but I'm pretty sure that these three do. I would select all of these.
Hope that helps and have a nice day.
Which statement is correct?
Natural processes happen spontaneously when they decrease the entropy of a system because entropy increase is counteracted by the flow of enthalpy from high temperatures to low temperatures.
Among solids, liquids, and gases, solids generally have the highest entropy because solid particles are the least mobile, and entropy is inversely related to mobility of particles.
Any change that increases the number of particles in a system increases entropy because it increases the randomness and disorder of the system.
Dissolving table salt (NaCl) in water leads to a decrease in entropy because salt particles, which are numerous individual crystals in solid form, become a homogenous solution in water.
Answer:
Any change that increases the number of particles in a system increases entropy because it increases the randomness and disorder of the system.
Explanation:
Imagine dropping a glass pitcher on a hard surface. The pitcher breaks into numerous shards. If the shards were collected and dropped again, they would tend to break into smaller shards; they would not reassemble themselves into a pitcher. In the universe, there is a tendency for order to be replaced with disorder. This tendency is related to a concept called entropy. The formal definition of entropy is a measure of the degree of randomness and disorder in a system.
In the image of the billiard table below, a cue ball is about to be struck and pushed toward the other balls
When the cue ball collides with the other balls, it will slow down and the other balls will be set in motion. Which statements best
describes why?
OA. The cue ball loses all of its kinetic energy, and the other balls gain some kinetic energy
OB. The cue ball loses all of its kinetic energy, and the other balls gain some potential energy
OC. The cue ball loses some of its potential energy, and the other balls gain some kinetic energy
OD. The cue ball loses some kinetic energy, and the other balls gain some kinetic energy
Answer:
c
Explanation:
Select all that apply. Which of the following are made of atoms?
Answer:
Your next meal, you, and your computer.
Answer:
your next meal, you and your computer.
Can someone help me pls?
Zr + O ⇒
B + O ⇒
Zn + C ⇒
Co + I ⇒
Mg + Br ⇒
Explanation:
tttttttttttttttttttttttt
Genetic material (_____) is passed from cell to cell.
Answer:
DNA
Explanation:
Genetic material DNA is passed from cell to cell.
What is DNA?DNA is Deoxyribonucleic acid. It is a polymer composed of two polynucleotide chains. These chains coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. It keeps on transferring from generation to generation. Two types of Nucleic acids are DNA and ribonucleic acid.
In DNA, 4 bases are present that are Adenine, Guanine, Cytosine and Thymine. Whereas Thymine is replaced by Uracil in case of RNA.
These bases are connected by hydrogen bonds with each other.
The configuration of the DNA molecule is highly stable, allowing it to act as a template for the replication of new DNA molecules, as well as for the production (transcription) of the related RNA (ribonucleic acid) molecule.
Therefore, Genetic material DNA is passed from cell to cell.
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why does the earth experience seasons?
Help a person out please
Explanation:
here I haven't drawn the diagram but I have marked them where they will be .
So if it helps don't forget to like and Mark me
sand is a particulate in nature
Answer:
[tex]\color{Blue}\huge\boxed{Answer} [/tex]
Sand is a granular material composed of finely divided rock and mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt.
HELPPPPPPPPPPPPPPPPP
The water is formed from oxygen gas and...hydrogen gas, I'm assuming? It would have been nice for the question to have been a bit more explicit (not blaming you, of course).
Assuming that's the case, our chemical reaction would be:
2H₂(g) + O₂(g) → 2H₂O(l).
We are told that 1 mol of a gas has a volume of 24.0 dm³ at RTP. We can use this relation to determine the number of moles of O₂ gas that reacts given its initial volume, 33.5 dm³.
33.5 dm³ O₂(g)/24.0 dm³/mol = 1.396 mol O₂(g).
Since we are not given any information about H₂(g), or any other reactant for that matter, I am assuming that the O₂(g) is the limiting reactant. According to the equation, the stoichiometric ratio between O₂ and H₂O is 1:2. That is, for every one mole of O₂ that is consumed, two moles of H₂O are formed (i.e., the number of moles of H₂O formed is double the number moles of O₂).
Since 1.396 moles of O₂ reacts, 2(1.396) = 2.792 moles of H₂O are produced. To convert moles of water to grams, we multiply the number of moles of H₂O by the molar mass of H₂O:
(2.792 moles H₂O)(18.015 g/mol) = 50.3 g H₂O.
So, approximately 50.3 grams of water are formed from 33.5 dm³ of oxygen gas at RTP.
Comprehension Questions:
1. What are the horizontal (from left to
right) parts of the periodic table
called?
1.Si dos átomos tienen el mismo "Z" pero diferente "A" se trata de : a) Nucleones b) Isótopos c) Mesones
Answer:
Si dos átomos tienen el mismo "Z" pero diferente "A" se trata de Isótopos.
Explanation:
Cada elemento químico se caracteriza por el número de protones de su núcleo, que se denomina número atómico Z. Pero en el núcleo de cada elemento también es posible encontrar neutrones, cuyo número puede variar. La masa atómica (A) se obtiene sumando el número de protones y de neutrones de un núcleo determinado.
Un mismo elemento químico puede estar constituido por átomos diferentes, es decir, sus números atómicos son iguales, pero el número másico es distinto. Estos átomos se denominan isótopos del elemento. Si a un átomo se le añade un neutrón, se convierte en un isótopo de ese elemento químico. En otras palabras, se denomina isótopos a los átomos de un mismo elemento, cuyos núcleos tienen una cantidad diferente de neutrones.
Los isótopos de un elemento tienen las mismas propiedades químicas, pero difieren algo en sus propiedades físicas.
Entonces, si dos átomos tienen el mismo "Z" pero diferente "A" se trata de Isótopos.
9. Which indicator would show a pH change from 6 to 7?
Phenol red indicator
Blue litmus indicator
Red litmus indicator
Methyl red indicator
Will give brainliest!!!!
Answer:
hi
Explanation:
because
What is a gluon?
A. A particle that binds quarks to one another
B. A radioactive particle
C. An electrostatic force
D. A weak nuclear force
Answer:
A
Explanation:
it binds quarks together
In quantum chromodynamics the theory of the strong force, the interactions of the quarks are described in terms of eight types of massless gluon. A gluon is a particle that binds quarks to one another. The correct option is A.
What is gluon?The gluon, so called the messenger particles is defined as the strong nuclear force which binds the subatomic particles known as quarks within the protons and neutrons of stable matter as well as within heavier short-lived particles at high energies.
It has been found that the quarks interact by emitting and absorbing gluons just as electrically charged particles interact through the emission and absorption of photons. Like quarks the gluons carry a strong charge known as colour. This means that gluons can interact between themselves through the strong force.
The gluons have no electric charge.
Thus the correct option is A.
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A piece of metal is composed of atoms. Each atom in the metal contains 29 protons. How is the metal classified?
Answer:
Explanation:
The metal is classified as a transition metal or transition element. In particular, this atom is Copper it has an atomic number of 29 which we know by the number of protons. The number of protons in an atom is the same as the atomic number.
Answer:
Copper
Explanation:
Each atom in the metal contains 29 protons.
pls show ur work will mark the brainliest
Answer:
M = 0.47
Explanation:
1 - Turn grams to moles using molar mass:
16g NaOH × 1 mol NaOH / 40g NaOH = 0.4 mol NaOH
2- Turn milliliters to liters:
855mL × 1 L / 1000mL = 0.86 L
3- Use formula which is M = moles of solute / liters of solvent:
M = 0.4 mol NaOH / 0.86 L = 0.47
2
In the movie, Tim says that Saturn's rings refract light to
produce colors. What does this mean?
A They emit light
B They bend and reflect light
CThey absorb all light
D They block light
Answer:
It would be B they bend to reflect light
8.Which of the following is a base?
a) H2SO4
b) HNO3
c) HCl
d) NaOH
9. Which of the following is an acid?
a) Mg(OH)2
b) Al(OH)3
c) H2CO3
d) NH4OH
Answer:
Explanation:
Unit 10 - Acid/Base ... (a) Mg(OH. 2. ) (b) Mg(OH). 2. (c) Mg. 2. OH. (d) MgOH. 2. Standard: ... balanced equation for these neutralization reactions: 3. HCl + NaOH → ... H2CO3 + Ca(OH)2 → ... C5.7B Predict products of an acid-base neutralization. 8. 2 NH4OH + H2S ...An Arrhenius base is a compound that increases the OH − ion concentration in ... and a base is called a neutralization reaction and can be represented as follows: ... chemical equation for the neutralization reaction between HCl and Mg(OH) 2. ... acid, an Arrhenius base, or neither. a) NaOH. b) C 2H 5OH. c) H 3PO 4. 6
When is the mole ratio from a balanced chemical reaction not needed in a calculation
Answer:16
Explanation:
HELPPP!!!
Using the following data, which is the correct rate law of the sample reaction?
A5B + 6C 3D + 3E
Experiment (A) (M) [B] (M) [C](M) Initial Rate (M/s)
1
0.35 0.35 0,35 8.0 x 104
2
0.70
0.35
0.35
3.2 x 10-
3
0.70
0.70
0.35
6,4 x 10-8
4
0.70
0.35
0.70
3.2 x 10-3
A.) K[A]^2 [B]^1 [C]^1
B.) K[A]4 [B]^2 [C]^1
C.) K(A)^2 [B]^1 [C]^O
D.) k[A]^1 (B)^2 [C]^O
i think its C not so sure rho
good ,uck!!!!
Based on the data given, the correct rate law of the sample reaction is: C. [tex]R = K[A]^2[B]^1[C]^0[/tex]
What is the rate law?Rate law can be defined as a chemical equation that is typically used to relate the initial (forward) chemical reaction rate with respect to the concentrations or pressures of the chemical reactants and constant parameters.
Mathematically, the rate law is given by this formula:
[tex]R = K[A]^x[B]^y[C]^z[/tex]
Where:
k is the rate constant.A is the concentration of reactant A.B is the concentration of reactant B.C is the concentration of reactant C.x, y, and z are the order of the reaction.Based on the data given, the correct rate law of the sample reaction is as follows:
[tex]R = K[A]^2[B]^1[C]^0[/tex]
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Heeelllpp !!
What system is sealed and will not release any gases from a chemical reaction?
Answer: closed system
Explanation:
20
very very very very very very very very hard
HELP A #QUEEN OUT !!!!!!
Select the correct answer.
Which reaction is a decomposition reaction?
A.
2KClO3 → 2KCl + 3O2
B.
4Na + O2 → 2Na2O
C.
ZnS + 3O2 → 2ZnO + 2SO2
D.
2NaBr + CaF2 → 2NaF + CaBr2
Answer: 2KClO3 → 2KCl + 3O2
Explanation: it's the only one that was broken down into more parts than the start, the rest were simply reseperated
this one : 1 → 2
b : 1 + 1 = 2
c : xy+ wz → wy + xz
d : qwer +tyuio → qwui + tyero
ALSO I got it right
How many formula units are in 2.0 moles of Fe(NO3)2?
Answer:
1.2 x 10>24 (2.0)(6.022 x 10>23)
Explanation:
How many formula units are in 2.0 moles of Fe(NO3)2?
Mole measure the number of elementary entities of a given substance that are present in a given sample. 12.044×10²³ formula units are in 2 moles of Fe(NO₃)₂.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. Mole is inversely proportional to molar mass.
Mathematically,
Mole of Fe(NO₃)₂. =given number of atoms of Fe(NO₃)₂.÷ 6.022×10²³(Avogadro number)
mole of Fe(NO₃)₂= 2moles
Substituting the values
2=number of atoms of Fe(NO₃)₂.÷ 6.022×10²³
Number of atoms of Fe(NO₃)₂.=2×6.022×10²³
Number of atoms of Fe(NO₃)₂.=12.044×10²³
Therefore, 12.044×10²³ formula units are in 2 moles of Fe(NO₃)₂.
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You observe mothballs disappearing in cabinets. What do you think is the reason for this? Do all substances behave like mothballs at normal conditions? Explain by citing some examples Need lang po for science ;(
Answer: Mothballs have weak intermolecular forces.
No all substances do not behave like mothballs at normal conditions. Example: benzene , chloroform
Explanation:
Sublimation is a process of converting a substance from solid state to gaseous state without the formation of liquid at constant temperature.
A substance which undergoes sublimation is called as sublimating substance.
As mothballs is made of napthalene which has weak inter molecular forces of attraction between its molecules, it directly sublimes into gaseous state without leaving any residue and is called as a sublimating substance.
Not all substances behave like mothballs at normal conditions. Example: benzene , chloroform
Due to weak intermolecular attraction force mothballs will disappear and not every compound show this type of behavior like benzene and chloroform.
What are mothballs?Mothballs are also known as Naphthalene balls, they are the aromatic organic compounds and they are the members of the sublimating substance family as they directly convert into gaseous state from the solid state.
In the mothballs or naphthalene balls, there is a weak attraction of force London dispersion force is present between their constitute particles, and in normal condition they show sublimation and gets disappear. Not all aromatic compounds behave like these balls as not in all compounds these types of force present, for example in benzene and chloroform strong covalent bond is present.
Hence, not all compounds behave like mothballs and they show that property due to weak attraction force.
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The pressure in a certain tire is 109 kPa, what is the pressure of the air in the tire in
psi?
Answer:
pressure ranges between 30 and 35 PSI
Explanation:
Answer:
1.08 atm
Explanation:
I hope you pass !!
Read the sentence from "Black Hole Beginnings."
As more stuff gathers, its combined gravitation grows stronger.
What question should readers ask to determine the effect in the sentence?
How much stuff is combined?
Where does the stuff gather?
Why does the gravitation grow stronger?
What happens when more stuff gathers?
Answer: the answer Is d
Explanation:
The question that readers should ask to determine the effect in the sentence is that what happens when more stuff gathers?
What is a sentence?Sentence is defined as a group of words, usually containing a subject and a verb, expressing a statement, question, instruction, or exclamation, and, when written, starting with a capital letter and ending with a period or other mark, example, Your sentences are too long and complicated.Many sentences written together form a paragraph.
In law, a punishment is which is given by a law court to a person or organization that is guilty of a crime. It is a grammatical unit of one or more words that expresses an independent statement, question, request, command, exclamation, etc.
In print or writing, a sentence typically begins with a capital letter and ends with appropriate punctuation; in speech it displays recognizable, communicative intonation patterns and is often marked by preceding and following pauses.
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Which one is not a long-term environmental change?
Pollution
Swimming
Deforestation
Climate Change
Answer:
Swimming
Explanation:
Pollution is almost irreversible and takes forever to fix. deforestation leads to bad air quality and the erosion of the ground. climate change can melt polar caps or for instance freeze texas.
what type of wave moves the particles parallel to the motion of the wave
a.electromagnetic
b. longitudinal
c. transverse
d.water
Answer:
c
Explanation:
Name two processes which provide the best evidence for the motion of particles in matter.
Answer:
Diffusion and Brownian motion are the two processes which provide best evidence for the motion of particles in matter.
Why do you think Newton’s cradle stops swinging? What does this imply about the energy in the system of pendulums?
