Answers
Answer:
I think it will be true. But I'm not sure.
Answer:
I think so It's true
let's me check
Related Questions
At the end of seafloor spreading, where does the molten rock solidify?
Answers
Answer:
As the two plates move apart from each other, which often occurs at a rate of several centimetres per year, molten rock wells up from the underlying mantle into the gap between the diverging plates and solidifies into new oceanic crust. Spreading centres are found at the crests of oceanic ridges.
Explanation:
I found this answer by taking notes in class
Answer:
0k HI! so the answer is A
Explanation:
hope is helpful
Use the information in the table to describe the temperature-vs.-time diagrams.
The diagram for gallium will have flat, horizontal lines
°C.
The diagram for methane will have a
line representing the
between -183°C and -162°C.
For gold, the boiling point corresponds to the y-value at
°C of the
For nitrogen, the line at -210°C will be
, which represents the
Answers
Answer:
At 30 and 2,204
diagonal
liquid phase
2856
top horizontal line
flat
the change from a solid to a liquid
Explanation:
Consider the fermentation reaction of glucose:
A 1.00-mole sample of C6H12O6 was placed in a vat with 100 g of yeast. If 32.3 grams of C2H5OH was obtained, what was the percent yield of C2H5OH?
A) 35.1%
B) 17.5%
C) 100%
D) 32.3%
E) none of these
Answers
The fermentation reaction of glucose produces C\(_2\)H\(_5\)OH and CO\(_2\) according to the following equation:
C\(_6\)H\(_{12}\)O\(_6\) → 2C\(_2\)H\(_5\)OH + 2CO\(_2\)
The molar mass of glucose (C\(_6\)H\(_{12}\)O\(_6\)) is 180.16 g/mol, so 1.00 mole of glucose corresponds to 180.16 g.
To find the theoretical yield of C\(_2\)H\(_5\)OH, we need to use stoichiometry. From the balanced equation, we see that 1 mole of glucose produces 2 moles of C\(_2\)H\(_5\)OH. Therefore, 1.00 mole of glucose should produce 2.00 moles of C\(_2\)H\(_5\)OH.
The molar mass of C\(_2\)H\(_5\)OH is 46.07 g/mol, so 2.00 moles of C\(_2\)H\(_5\)OH corresponds to 92.14 g.
The actual yield of C\(_2\)H\(_5\)OH obtained is 32.3 g.
The percent yield is calculated as (actual yield/theoretical yield) x 100%. Therefore, the percent yield of C\(_2\)H\(_5\)OH is:
(32.3 g/92.14 g) x 100% = 35.1%
So the answer is (A) 35.1%.
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Write the configuration of a magnesium atom? Will the atom lose or gain electrons? Explain using the idea of stability and energy.
Answers
Answer:
\(1s^{2} 2s^{2} 2p^{6} 3s^{2}\)
Magnesium will lose 2 electrons.
Explanation:
Looking at a periodic table, magnesium is in the third period and the second group. It would help to look up where atomic orbitals are on the periodic table, but basically, s orbitals are filled in the first two groups. Since magnesium is in the second group, it will just have filled a 3s orbital with two electrons.
Elements in groups 1A, 2A, and 3A especially like to lose electrons to gain stability. Elements want to have a filled valence (outer) orbital with 8 electrons (except for hydrogen and helium) like noble gases. As such, they will lose or gain electrons in the easiest way possible to get a filled valence orbital. Magnesium wants to have the electron configuration of the nearest noble gas, in this case neon, so it will lose 2 electrons to achieve this stability. It takes much less energy to lose 2 electrons than gain 6 to fill its valence orbital, so magnesium will go for the former.
Energy-requiring reactions can occur in biological systems because they can be coupled with reactions that are?
Answers
Energy-requiring reactions can occur in biological systems because they can be coupled with reactions that are exergonic reaction.
In chemical thermodynamics, an exergonic reaction is a chemical reaction where the conversion in the free energy is negative (there is a net allow to leave of free energy). This shows a unbidden reaction if the structure is closed and starting and final temperatures are the similar.
Formula of exergonic reaction :
∆G = Gproducts - Greactants
where
∆G = change in free energy
G-products = free energy of products
G-reactants = free energy of reactants
Now, it can understood that "Energy - requiring reactions can occur in biological systems because they can be coupled with reactions that are exergonic reactions."
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When a substance undergoes a change
of state (liquid to solid, gas to liquid,
etc.), what type of property is involved?
A. a field property
B. no properties are involved
C. a fold-able property
D. a physical property
Answers
Answer:D
Explanation:Each time state transforms into a solid matter thus a physical property is the answer.BRAINLIEST PLEASE
The deciduous forest supports a diverse ecology. A warm growing season with abundant moisture encourages plants to grow, and the ground is covered with small plants, flowers, ferns, and grasses. In spring the trees and shrubs produce new leaves and colorful flowers. In summer the tall trees cast shade on the forest floor, providing ideal growing conditions for shade-tolerant plants. Seeds and berries provide for plant reproduction, and feed small rodents and birds. The leaves that fall in the autumn provide plenty of material for decomposers, soil bacteria, worms, grubs, and fungi. All these plants together are the primary producers. If berries were destroyed and taken out of the food web, which organisms would be directly affected? *
10 points
Captionless Image
The snake, the owl, and the fox would be directly affected by the loss of berries.
The mouse and the frog would be directly affected by the loss of berries.
No organisms in the food web would be directly affected by the loss of berries.
The squirrels, rabbits, and grasshoppers would be directly affected by the loss of berries.
Answers
Answer:
The squirrels, rabbits, and grasshoppers would be directly affected by the loss of berries.
Explanation:
Refer to the attached picture below.
The arrows in the diagram represent which way the energy flows. There are only three ways the energy flows directly to an organism. Those are to the grasshopper, the frog, and the rabbit. (in the picture below, these are circled in red.)
Therefore, we can assume that the correct answer would be D. The squirrels, rabbits, and grasshoppers would be directly affected by the loss of berries.
Hope this helps! Brainliest would be much appreciated. Have a great day!
a -l container is filled with g argon. if the pressure is atm, what is the temperature? if the temperature is k, what is the pressure?
Answers
A) If, the pressure is 10.0 atm, the temperature in the 2.50 L container filled with 175 g of argon is approximately 57.3 K. B) If the temperature is 225 K, the pressure in the 2.50 L container filled with 175 g of argon is approximately 79.1 atm.
Firstly, we can use the ideal gas law equation;
PV = nRT
Where;
P = pressure (in atm)
V = volume (in liters)
n = number of moles of gas
R = ideal gas constant (0.0821 L·atm/mol·K)
T = temperature (in Kelvin)
Given;
V = 2.50 L
m (mass of argon) = 175 g
P = 10.0 atm
First, we need to calculate the number of moles of argon using the given mass and the molar mass of argon.
The molar mass of argon will be approximately 39.95 g/mol.
Number of moles (n) = mass/molar mass
n = 175 g / 39.95 g/mol
n ≈ 4.38 mol
Now, we rearrange the ideal gas law equation to solve for temperature (T);
T = PV / (nR)
Substituting the given values, we have:
T = (10.0 atm) × (2.50 L) / (4.38 mol × 0.0821 L·atm/mol·K)
Calculating this expression, we find;
T ≈ 57.3 K
Therefore, if the pressure is 10.0 atm, the temperature in the 2.50 L container filled with 175 g of argon is approximately 57.3 K.
Given;
T = 225 K
To find the pressure (P), we rearrange the ideal gas law equation as follows;
P = nRT / V
Substituting the given values, we have:
P = (4.38 mol × 0.0821 L·atm/mol·K × 225 K) / (2.50 L)
Calculating this expression, we find:
P ≈ 79.1 atm
Therefore, if the temperature is 225 K, the pressure in the 2.50 L container filled with 175 g of argon is approximately 79.1 atm.
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--The given question is incomplete, the complete question is
"A 2.50-L container is filled with 175 g argon. a. If the pressure is 10.0 atm, what is the temperature? b. If the temperature is 225 K, what is the pressure? "--
Where does transcription occur and why does it occur there
Answers
Answer:
Transcription takes place in the nucleus
Explanation:
it uses dna as a template to make an rna molecule. rna then leaves the nucleus and goes to ribosome in the cytoplasm, where translation occurs translation reads the genetic code in mrna and makes a protein.
Answer:
Transcription takes place in the nucleus
Explanation:
RNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs
What is the chemical name of the compound K₂SO4?
Answers
Answer: Potassium Hydrogen Sulfate
Explanation: The name of the compound K2SO4 is Potassium Hydrogen Sulfate.
how many moles ofNaCl can be produced from 4.5 moles of na from 2Na+cl2->2Nacl
Answers
The number of moles of sodium chloride (NaCl) that can be produced is:
4.5 moles Na * (2 moles NaCl / 2 moles Na) = 4.5 moles NaCl from 4.5 moles of sodium (Na), you can produce 4.5 moles of sodium chloride (NaCl) according to the balanced chemical equation.
The balanced chemical equation shows that 2 moles of sodium (2Na) react with 1 mole of chlorine (Cl₂) to produce 2 moles of sodium chloride (2NaCl). From the given information, we have 4.5 moles of sodium (Na). According to the stoichiometry of the balanced equation, we can determine the number of moles of sodium chloride (NaCl) that can be produced by using a simple mole ratio. Mole ratio of Na to NaCl: 2 moles NaCl / 2 moles Na Therefore, the number of moles of sodium chloride (NaCl) that can be produced is: 4.5 moles Na * (2 moles NaCl / 2 moles Na) = 4.5 moles NaCl Hence, from 4.5 moles of sodium (Na), you can produce 4.5 moles of sodium chloride (NaCl) according to the balanced chemical equation.
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CaC2 + 2H2O → C2H2 + Ca(OH)2If 4.8 moles of CaC2 are consumed in this reaction, how many grams of H2O are needed?
Answers
The given reaction is already balanced, that is to say tha the number of atoms in the reactants matches the number of atoms in the products. In the reaction, we can see the relationship between CaC2 and H2O. For each mole of CaC2 two moles of H2O react.
So, if 4.8 moles of CaC2 are consumed the moles of H2O needed will be:
Mol of H2O = Mol of CaC2 x 2
Mol of H2O = 4.8 x 2 = 9.6 mol of H2O
Now, to calculate the grams of H2O we will use the following equation and the mass molar of H2O.
Mass molar of H2O =18.01 g/mol
\(\begin{gathered} \text{Mass of H2O=Mol of H2O }\times Mass\text{ molar of H2O} \\ \text{Mass of H2O = 9.6 mol }\times18.01\frac{\text{ g}}{mol} \\ \text{Mass of H2O = 172.9 g} \end{gathered}\)So, if 4.8 moles of CaC2 are consumed in this reaction, 172.9 g of H2O are needed
1. The respiratory system depends on the nervous system for signals to:
Answers
Answer:transfer oxygen through your blood
Explanation:
Answer:
coordinate the muscles that control breathing
hope this helps ⭐
Which of the following is NOT a valid conversion factor?
A. 12 hours/1 days
B. 1 yard/3 feet
C. 1 dozen/12 cookies
D. 60 seconds/1 minute
Answers
Answer:
the answer is D I would say thats the answer
Answer:
I really don't know how I got to switching to a new job because I was in a hurry
You have a coin sitting on
a card on top of a glass. You want to put the
coin into the glass, but you are not allowed
to pick up the card. Think of how you can do
that. Then write a short explanation of why
it works that would make sense to someone
who doesn't remember Newton's laws of
motion.
Answers
You can just push the coin off it's place causing it's motion which causes the coin to fall in the glass.
What is motion?
Motion is defined as a phenomenon which is described with respect to change in object's position with respect to time.It is given in terms of displacement,velocity,distance ,acceleration,speed.
Branch of physics which deals with motion of objects without any reference to it's cause is called kinematics while the branch which studies forces and their effects on motion is called as dynamics.
Motion applies to various systems like objects,bodies, matter particles ,radiation ,curvature.There are three laws of motion which are proposed by Newton.Classical mechanics is based on Newton's law of motion.Relativistic mechanics is based on modern kinematics.
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what part of the human body provides milk
Answers
Answer: womans chest area
Explanation:
1.Mitch weighs out 67 grams of potassium (K) to make a buffer. How many moles of potassium did Dr. Hellman weigh out?
2.Which statement is NOT true about a reaction rate?
Group of answer choices
Increases with increase in reactant concentration
Increases with increasing temperature
Is the speed at which product is formed
Is the rate at which reactant is used up
All of the answers are true
3.Which statement is NOT true about a catalyst?
Group of answer choices
Are not used up during a reaction
Increases the rate of the reaction
Lowers the energy of activation
Biological catalysts are called enzymes
Are used up during a reaction
Answers
Answer:
1. 1.72 moles of potassium.
2. All of the answers are true
3. Are used up during a reaction
Explanation:
Recall that the number of moles is obtained from;
Number of moles= Mass of potassium/ molar mass of potassium
Mass of potassium= 67 g
Molar mass of potassium= 39 gmol-1
Number of moles of K= 67 g/ 39 gmol-1
Number of moles = 1.72 moles of potassium.
2. When we look at all the options, we will realize that all the options are true. The rate of reaction doubles for each 10°C rise in temperature, increasing reactant concentration increases particle collision and ultimately increases the rate of reaction. Rate of reaction deals with rate of disappearance of reactants or rate of appearance of products.
3. Catalysts remain unchanged in a chemical reaction because they do not actually participate in the reaction. Hence they are not used up in any chemical reaction.
To determine the concentration and purity of you ChDNA you will do a Abs Ratio at 260:280 and 260:230. What does the absorbance at 280 nm represent
Answers
The absorbance at 280 nm represents the presence of protein contamination in a sample when performing an Abs Ratio at 260:280 nm.
Absorbance Ratio (Abs Ratio) is a measure of the amount of impurities and contaminants in a nucleic acid sample. It is calculated by dividing the absorbance value of a nucleic acid sample at a specific wavelength (260 nm) by its absorbance value at another wavelength (either 280 nm or 230 nm).
The absorbance ratio at 260:280 nm and 260:230 nm can be used to assess the purity of nucleic acid samples by determining the concentration of protein and organic compounds that are co-extracted along with the DNA or RNA, which is purified from biological material.
The absorbance at 280 nm represents the presence of protein contamination in a sample when performing an Abs Ratio at 260:280 nm. Absorbance at 280 nm is typically used to assess protein contamination in a nucleic acid sample because proteins have a strong absorbance peak at this wavelength.
High absorbance at 280 nm and low absorbance at 260 nm indicate that the sample is contaminated with proteins. An Abs Ratio of 1.8-2.0 is considered to be an ideal ratio of purity for most nucleic acid samples.
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2. List and explain the three steps for solving a numeric problem.
Answers
Answer:
what is matter with example
Energy can be changed from potential to kinetic.
A.True
B.False
Answers
Answer:
An object has potential energy (stored energy) when it is not in motion. Once a force has been applied or it begins to move the potential energy changes to kinetic energy (energy of motion).
Therefore, true. (Also would u mind giving brainliest, you don't have to hehe)
Why might the seismic waves have traveled faster to one city than the other? A. They were traveling through different types of rocks. B. One city was quieter that the other. C. It is impossible for waves to travel at different speeds. D. One city was smaller than the other.
Answers
Answer: A. They were traveling through different types of rocks
Explanation:
A scuba tank contains a mixture of oxygen (O2) and nitrogen (N2) gas. The oxygen has a partial pressure of PO2=5.62MPa. The total gas pressure is 26.78 MPa. What is the partial pressure of nitrogen gas in the tank?
Answers
Answer:
21.16 MPa
Explanation:
Partial pressure of oxygen = 5.62 MPa
Total gas pressure = 26.78 MPa
But
Total pressure of the gas= sum of partial pressures of all the constituent gases in the system.
This implies that;
Total pressure of the system = partial pressure of nitrogen + partial pressure of oxygen
Hence partial pressure of nitrogen=
Total pressure of the system - partial pressure of oxygen
Therefore;
Partial pressure of nitrogen= 26.78 - 5.62
Partial pressure of nitrogen = 21.16 MPa
Answer:
The partial pressure of Nitrogen gas in the tank = 21.16 MPa.
Explanation:
According to Dalton's Law of partial pressure for gases, the total pressure of a mixture of gas under unchanging conditions is a sum of the partial pressures of each of the individual constituent gas.
The mixture consists of Nitrogen and oxygen gas. Hence, mathematically,
Total Pressure of the mixture = (Partial Pressure of Oxygen gas) + (Partial Pressure of Nitrogen gas)
Total Pressure of the mixture = 26.78 MPa.
Partial Pressure of Oxygen gas = 5.62 MPa.
Partial Pressure of Nitrogen gas = ?
26.78 = 5.62 + (Partial Pressure of Nitrogen gas)
Partial Pressure of Nitrogen gas = 26.78 - 5.62 = 21.16 MPa.
Hope this Helps!!!
You have three elements, A, B, and C, with the following electronegativity values:
Scoi
A = 0.9
B = 3.0
C = 3.5
You react the elements to form the substances AB, AC, and BC. Answer the following questions:
What type of substance is AB? What types of bonds are present? Explain your answer.
What type of substance is AC? What types of bonds are present? Explain your answer.
What type of substance is BC? What types of bonds are present? Explain your answer.
If any of the substances are ionic compounds, which element is the cation and which is the anion?
Explain your answer.
Answers
AB is an ionic Compound , BC is covalent Compound , AC is an Ionic Compound.
What is Electronegativity ?It is the tendency of an atom in which molecule is usually attract towards the shared pair of electrons which generally is known as electronegativity. As we move across a period i.e from left to right. Here the nuclear charge increases and the atomic size decreases, hence the value of electronegativity increases across a period according to the modern periodic table.Atomic number increases as we move down the group.The nuclear charge also increases but it's effect increase in nuclear charge is overcome with the help of addition of one shell. the value of electronegativity decreases while moving down the group.Now,
A = 0.9
B = 3.0
C = 3.5
AB is an ionic compound. If the difference of electronegativity between two atoms is more than 1.7 , then they will form ionic compound. Here A is Cation and B is Anion .
Electronegativity difference between A and C = 3.5 - 0.9 = 2.6Hence AC is an ionic compound.
A is Cation and B is Anion .
Electronegativity difference between B and C = 3.5 - 3.30 = 0.5Hence BC is a covalent Compound.
Thus , from the above conclusion we can say that, AB is an ionic Compound , BC is covalent Compound , AC is an Ionic Compound.
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A graph of potential energy versus internuclear distance for two Cl atoms is given below. On the same graph, carefully sketch a curve that corresponds to potential energy versus internuclear distance for two Br atoms.
Answers
Answer:
Explanation:
The sketch of the curve for two Br atoms can be seen in the image attached below. From the image below, we can deduce the following:
On the periodic table, the Bromine (Br) atom is the fourth member in the halogen family group. The atomic size increases from top to bottom down the group, thus Br atom posses a larger atomic size than Cl atom. As a result of that, the bond length formation between the two Br atoms will be larger compared to that of the two Cl atoms.
a compound is analyzed and found to contain 12.1% carbon, 16.2% oxygen, and 71.7% chlorine (by mass). calculate the empirical formula of this compound.
Answers
Answer:
COCl2 Phosgene
Explanation:
HELP! 40 POINTS
The data table shows the number of pumpkin seeds that germinate at different temperatures.
Answers
Answer:
it is C 65
Explanation:
Answer:
bri its c 65
Explanation:
Which best defines concentration?
ratio that describes the amount of solute divided by the amount of solvent or solution
ratio that describes the amount of solvent or solution divided by the amount of solute
ratio that describes the mass of solute divided by the mass of solvent
ratio that describes the amount of solvent in a solution
Answers
Concentration is defined as the ratio of the amount of solute to the amount of solvent or solution. It is typically expressed in terms of mass or volume. For example, a 1:1 ratio of solute to solvent would indicate that the solution contains equal amounts of the two components.
What is component?A component is a reusable, independent piece of code that is designed to perform a specific task. Components are self-contained, often with their own user interface, and can be combined with other components to create larger, more complex applications. Components are a fundamental building block in software engineering, and they can be used in a variety of ways, such as to create a customer relationship management application, a web-based game, or a virtual assistant. Components can also be used to create software libraries, frameworks, and plugins. They are often written in different programming languages, such as HTML, CSS, JavaScript, or Java.
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Can I find a tutor help me wit this question?
Answers
Chemistry =>Introduction to Chemistry => Scientific Method
A scientific method corresponds to a methodology to obtain new knowledge.
We must start from an idea, an assumption of how a compound or a process behaves, this is our hypothesis.
Following this, we must identify what can affect our process, what are the variables, and what will be the response variable, for this we carry out an experiment.
Once the experiments have been carried out, we must analyze the results, draw conclusions as to why the behavior occurs, and if our hypothesis is true or not.
It is useless for us to obtain new knowledge if we do not share it, We have to share the results, in this way other people can start from that knowledge to create another,
Therefore, the answer will be:
1. Make a hypothesis
2. Conduct an experiment
3. Analyze the experiment data
4. Communicate the results
Sunspot activity is a forcing that, when active, decreases solar
flux.
Group of answer choices
True
False
Deforestation removes (acts as a sink for) CO2.
Group of answer choice True
False
Answers
Sunspot activity is a force that, when active, decreases solar flux.
Answer: False.
Deforestation removes (acts as a sink for) CO2.
Answer: False.
Sunspot activity is known to have the opposite effect on solar flux. When sunspot activity is active, it actually increases solar flux. Sunspots are cooler regions on the sun's surface that appear as dark spots. They are associated with intense magnetic activity, which can lead to increased solar flares and coronal mass ejections. These events release large amounts of energy and increase the solar flux, causing an elevation in the intensity of solar radiation reaching Earth.
Deforestation does not act as a sink for CO2; instead, it contributes to increased levels of carbon dioxide in the atmosphere. Trees play a crucial role in carbon sequestration as they absorb CO2 during photosynthesis and store it in their biomass. However, deforestation involves the removal or destruction of trees, which leads to the release of stored carbon back into the atmosphere as CO2. This process contributes to the greenhouse effect and exacerbates climate change. Deforestation is considered a major driver of CO2 emissions and loss of carbon sinks, thereby accelerating the accumulation of CO2 in the atmosphere.
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Exercise 3.1 Evaporation
In this exercise, you will think about what evaporation is and how it happens.
1 Complete these sentences. Choose the correct word when there
is a choice.
Evaporation occurs when a
turn into a
The particles in the liquid
turns into a
gain/lose
and move faster/slower and closer
together/further apart until some of them escape from the surface and
become a
Answers
Evaporation occurs when a liquid turns into vapour . The particles in the liquid gain energy and move faster and further until some of them escape from the surface and become a vapour
What is Evaporation ?A type of vaporisation called evaporation takes place on the surface of a liquid as it transitions into the gas phase. When humidity impacts the rate of evaporation of water, for example, a high concentration of the evaporating substance in the surrounding gas considerably slows down evaporation.A liquid transforms into a gas during evaporation. It is simple to picture when puddles of rain "vanish" on a hot day or when wet clothing dries in the sun. In these instances, the liquid water is evaporating into a gas known as water vapour rather than really dissipating. Global evaporation takes place.Evaporation occurs on surfaces. The top layer of the liquid evaporates because the molecules with the highest kinetic energy escape into the air, causing it to become lighter.
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