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Answer: Therefore elements with high ionization energies have more positive electron affinity whereas alkali metals having the lowest ionization energy do not tend to add electrons.
Explanation: So energy is to be supplied for the addition of electrons and shows positive electron affinity.
Hope This Helps You Out! So... The Answer Your Looking For Is "True"
The statement is true as all elements with high ionization energy have more electrons and hence have high electron affinity.
What is an element?
It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.
Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.
The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.
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HURRY UP PLEASE I NEED IT NOW
Examine the illustration. What objects shown in the image do you think have energy? Explain.
20 points on the line
Which compound is a hydrocarbon?
C 2 H 6
H 2 O
CO 2
C 6 H 12 O 6
Answer:
C2H6 OR C6H12O6 THE ANSWER
Explanation:
C2H6
!!!!!!!!!!
because it has both hydrogen and carbon as given in the word "Hydro-carbon"
What is the relationship between molecular motion and energy?
Answer:
Because the particles are in motion, they will have kinetic energy. The particles will not all have the same energy, and the energy of the particles is constantly changing as they undergo changes in speed. Thus, for a given sample of matter, we can only talk about the average kinetic energy of the particles.
Explanation:
I hope this helps and pls mark me brainliest :)
We do know that if we "give" energy to a given object, the temperature of the object increases.
So there is a direct relationship between temperature and energy.
From this idea, we can conclude that:
"As we increase the energy, we also will see an increase in molecular motion."
We also do know that, as the temperature of an object increases, also does the kinetic energy of the particles that conform to the object (as the kinetic energy increases, the particles move more, this is why as we increase the temperature we usually see an increase in the volume of the object).
This increase in kinetic energy is related to the molecular motion (the movement of the electrons and nucleus o a molecule) as the kinetic energy of these parts increase, these move more.
So the relationship between molecular motion and energy is:
As we increase the energy, we also will see an increase in molecular motion.
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Make a funny sentence of alloys for Magnesium
Here is an example for Mercury, it HAS to for Magnesium
“I love to travel but I do corrode aluminum so we won’t be flying off on adventures in airplanes planes anytime soon”
Answer:
Sometimes the whole alloy in a uniform is a solid solution
the overall take away of an experiment’s results is the______. A. hypothesis B. introduction C. conclusion
Answer:
conclusion
Explanation:
it can't be a hypothesis since tests are carried out to verify so it is not a theory
an introduction to an experiment only gives the basis of what we are investigating therefore nothing has been proven and the question is still unanswered
The overall takeaway of an experiment’s results is the conclusion. Hence, option C is correct.
What is a hypothesis?A hypothesis is a testable statement about the relationship between two or more variables or a proposed explanation for some observed experiment.
The overall takeaway of an experiment’s results can't be a hypothesis since tests are carried out to verify so it is not a theory
An experiment only gives an idea about the investigation therefore nothing has been proven and the question is still unanswered.
Hence, the overall takeaway of an experiment’s results is the conclusion.
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Drag and drop the words that accurately complete the chart below. Example a lion and a cheetah mistletoe on a tree a coyote eating a rabbit a remora and a shark clownfish and anemone parasitism friendship competition Type of Symbiosis mutualism 1:10 predation relationship commensalism collaboration alliance
Answer:
Lion and cheetah - Competition
Mistletoe on a tree - Parasitism
Coyote eating rabbit- Predatation
Remora and Shark - Mutualism
Clownfish and Anemone - Relationship
Explanation:
A gas occupies a volume of 50.0mL at 27°C and 630mmHg. At what temperature, in C°, would the pressure be 101.3kPa if the volume remains constant? 5. A sample of gas is initially at STP. What would the pressure be if the temperature were increased to 819°C?
Answer:
Explanation: pls read what i wrote i don't know if it's correct but i just tried to solve it
I need help for number 2, I don’t quite get it
A change in the nucleus of an atom that converts the atom from one element to another element is called.
Answer:tranmutation
Explanation:
When chemical W is added to a liquid, the chemical breaks down into substances X, Y, and Z. It is not possible to break down substances X, Y, and Z into simpler substances. What conclusion is supported by this evidence?
Chemical W is an element.
Chemical W is a pure substance.
Substances X, Y, and Z are elements.
Substances X, Y, and Z are compounds.
Answer:
Chemical W is a pure substance
Explanation:
We can conclude that the substance W is a pure substance. Matter on a broad basis can be classified as either pure or distinct substance and impure substances (mixtures).
Pure substances are elements and compounds. All the parts are homogenous. They have a definite composition. They cannot be split by physical means.So, since we can only split the substance into elements X, Y and Z with no simpler units, W is a compound and a pure substance.
how many sulfate ions are there in 321 grams of iron lll sulfate
Vocabulary crossword puzzle properties of minerals
Answer:
? no image
Explanation:
Molecules of _________, ________, _________ move at different rates through a medium as simple as paper.
Molecules of different compounds, such as pigments, amino acids, and sugars, can move at different rates through a medium, even as simple as paper, due to their varying physical and chemical properties. This is the basis for a common laboratory technique called chromatography.
In chromatography, a sample containing different compounds is applied to a stationary phase, such as paper or a column packed with beads, and a mobile phase, such as a solvent, is used to move the compounds through the stationary phase. As the compounds move through the medium, they interact with it in different ways, resulting in different rates of movement.
For example, pigments with different absorption strengths will interact differently with the stationary phase, leading to differences in their rates of movement. Similarly, amino acids and sugars with different molecular weights and polarities will interact differently with the mobile phase, leading to differences in their rates of movement.
Overall, chromatography is a powerful tool for separating and identifying different compounds within a mixture, and the different rates at which molecules move through a medium is a key factor in this process.
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the outermost layer of earth's atmosphere is
Answer: Exosphere
Explanation:
Answer:
exosphere
Explanation:
the outermost layer of earth's atmosphere is called exosphere
PLZ HELP ME!!!!!!!!!!!!!!!
Answer:Graduated Cylinder
Explanation:
You use the water displacement test to find the volume of irregular shaped objects.
Answer:
Graduated Cylinder
What type of change occurs at the molecular level?
When two or more molecules interact, chemical changes take place at the molecular level.
What transpires during a chemical change at the molecular level?The molecules in the reactants interact during a chemical reaction to create new compounds. No new material is created during a physical change, such as a state shift or dissolution. You may also assert that no atoms are generated or destroyed during a chemical reaction, so explain this.
How do molecular shifts in phase happen?The intermolecular interactions between the water molecules are weakening at the molecular level. The water molecules have access to enough energy from the heat to repel these forces. Intermolecular forces are either increased or decreased after every phase shift.
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answer the pic below
Answer: 18
Explanation:
i think so
can someone please help meeeee (im doing map)
Hydrazine is a colourless fuming corrosive strongly reducing liquid base \(N_2H_4\) used especially in fuels for rocket and jet engines. And \(2H_2\)(g) is used to prepare hydrazine. Hence, option B is correct.
\(N_2(g)+2H_2(g)\) → \(N_2H_4(g)\)
What is hydrazine?Hydrazine is a chemical compound with the formula \(N_2H_4\). It has an ammonia-like odour, but the properties are more similar to water.
Chemical equation of the formation of hydrazine:
\(N_2(g)+2H_2(g)\) → \(N_2H_4(g)\)
Hence, option B is correct.
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What are the effects on people when mosquito fail to reproduce and become extinct
Answer:
Less mosquito deaths and infections and diseases. There probably is a lot more than my answer tho
Explanation:
When 3.0 kg of water is cooled from 80.0c to 10.0c, how much heat energy is lost
According to specific heat capacity, when 3.0 kg of water is cooled from 80.0°C to 10.0°C 882 J of energy is lost.
Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.
Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.
It is given by the formula ,
Q=mcΔT,substitution of values gives Q= 3×4.2×20=882 J.
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2 NaOH + H2SO4 ------> 2 H2O + Na2SO4
How many moles of H2O can be produced from 12.5 moles of NaOH?
Explanation:
2moles of NaOH -> 2moles of H2O
so the number of moles r equal.
hence moles of H2O is 12.5
The graph represents the change in that occurs when food is cooked over a charcoal grill. Which statement correctly explains the graph?A. The reactants are unlit charcoal that has already released its energy, and the products are charcoal that has already burned.B. The reactants are charcoal that has already burned and released its energy, and the products are unlit charcoal.C. The reactants are unlit charcoal, and the products are charcoal that has already burned and released its energy.D. The reactants are charcoal that has already burned, and the products are unlit charcoal that has already released its energy.
The answer is C.
The reactants are charcoal that is unlit + oxygen and the products are the burnt charcoal + energy.
\(C_xH_y+O_{2\text{ }}\rightarrow CO_2+H_2O\text{ + heat}\)So for every combustion reaction like this one, CxHy is the wood. So before you light the wood, it is actally a reactant together with oxygen, because without oxygen the wood will not burn. So under the influence of heat, wood produces substances like carbon dioxide and heat, the moment you see wood burning it it already producing products, CO2 and heat (which is the fire). This is a combustion reaction.
Combustion reaction is exothermic because it releases energy.
A client is to recieve 2.00g of a drug. The drug comes on a solution that has 500 mg per 5.0 mL. Each vial contains 10 milliliters. How many vials do you need?
Answer:
2 vials
Explanation:
The concentration (C) of the drug in the solution is:
C= 500 mg/5 mL = 100 mg/mL
Each vial with a volume (V) of 10 mL, contains the following mass of drug:
V= 10 mL ⇒ C x V = 100 mg/mL x 10 mL = 1000 mg
As you need 2.00 g, and 1 gram is equivalent to 1000 mg, the mass needed is 2.00 g x 1000 mg/1 g = 2000 mg
Thus, you have to divide the mass you need into the mass of each vial:
(2000 mg)/(1000 mg/vial) = 2 vials
Therefore, you need 2 vials.
A gas sample was produced in the laboratory. The gas was determined to be more dense than air (which is mostly composed of nitrogen). What is the identification of the gas? a)Hydrogen b)Neon c)Methane (CH_4) d)Carbon Dioxide
The correct option is (d) Carbon Dioxide.
Explanation:
The density of air is around 1.2 g/L, which means that any gas with a density above this value is more dense than air.
Carbon dioxide has a density of approximately 1.98 g/L, which is considerably more dense than air (composed of nitrogen and oxygen).
As a result, if a gas sample is determined to be more dense than air, it is likely to be carbon dioxide (CO2), which has a molecular weight of 44 g/mol.
Carbon dioxide is produced in the laboratory by many chemical reactions and is commonly employed in the food and beverage industries, such as carbonating soda and beer.
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The Case of the Putrid Pond Problem Statement: A very large (500,000 sq. ft. 10 football fields) sludge pond is part of a waste treatment plant. The liquid in the pond is very viscous and sticky. From time to time, unwanted floating objects (dead animals, branches, etc.) appear on the pond and must be removed. Unfortunately, covering the pond is not an option. (a) Devise ways to solve the above-mentioned problem through all the FOUR (4) brainstorming methods and describe it in detail. (15 marks) (b) Draw and describe a fishbone diagram after organizing the ideas generated from (a). (10 marks)
The Case of the Putrid Pond Problem Statement:
1. Brainstorming generated solutions: debris collection nets, manual cleaning, water jets, filtration upgrades, waste management improvements, and regular maintenance.
2. Fishbone diagram: categorizes causes (inflow system, waste management, pond maintenance, environmental factors) and solutions (screening mechanisms, enhanced cleaning schedules).
(a) Devise ways to solve the above-mentioned problem through all the FOUR (4) brainstorming methods and describe it in detail:
1. Brainwriting: In this method, each team member writes down their ideas on sticky notes or a shared document without discussing them with others. The ideas can then be compiled and analyzed collectively. Some possible solutions through brainwriting could include:
- Deploying a large floating debris collection net or barrier around the perimeter of the pond to capture and remove floating objects.
- Implementing regular manual cleaning by workers using long-handled nets or other specialized tools.
- Introducing a system of water jets or pumps to create a flow within the pond, pushing floating objects towards a collection area for easy removal.
2. Reverse Brainstorming: In reverse brainstorming, instead of generating solutions, the focus is on identifying potential causes or factors that contribute to the problem. These causes can then be addressed to find solutions. Possible causes identified through reverse brainstorming might include:
- Inadequate filtration or screening mechanisms in the inflow system, allowing unwanted objects to enter the pond.
- Lack of proper waste management practices upstream, leading to the accumulation of debris in the pond.
- Inefficient or infrequent monitoring and maintenance of the pond, allowing the problem to persist.
3. Starbursting: This technique involves asking specific questions about the problem to prompt idea generation. Questions related to the Putrid Pond problem could be:
- How can we prevent unwanted floating objects from entering the pond in the first place?
- What alternative methods can be used to remove floating objects without covering the pond?
- Are there any environmentally friendly solutions that can be implemented?
4. Mind Mapping: Mind mapping is a visual brainstorming technique that involves creating a diagram with the main problem in the center and branching out ideas around it. Some ideas for solving the problem of the Putrid Pond could include:
- Installing automatic skimmers or surface vacuum systems to continuously remove floating debris.
- Implementing regular maintenance schedules for inspecting and cleaning the pond to prevent accumulation.
- Introducing biological treatment methods that can break down organic matter and prevent foul odors.
(b) A fishbone diagram, also known as a cause-and-effect or Ishikawa diagram, can help organize the potential causes and solutions identified through brainstorming. Here is a description of the fishbone diagram for the Putrid Pond problem:
The main problem, "Unwanted Floating Objects in the Pond," is written in the center of the diagram. The diagram branches out into different categories representing possible causes, such as "Inflow System," "Waste Management Practices," "Pond Maintenance," and "Environmental Factors." Each category contains the specific causes identified through brainstorming. For example, under "Inflow System," causes could include "Inadequate Filtration" and "Lack of Screening Mechanisms." Similarly, under "Pond Maintenance," causes could include "Insufficient Cleaning Procedures" and "Lack of Monitoring."
From the identified causes, further branches are created to suggest possible solutions. These solutions can be linked to the specific causes they address. For instance, under "Inflow System," a solution could be "Upgrading Filtration Systems" or "Implementing Effective Screening Mechanisms." Under "Pond Maintenance," solutions might include "Establishing Regular Cleaning Schedules" or "Enhancing Monitoring Practices."
The fishbone diagram visually represents the cause-and-effect relationships between the problem, its causes, and potential solutions, providing a structured overview of the brainstormed ideas.
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what mass of table sugar (sucrose) stores 10,000 J of energy
One mole of sucrose stores 5878 KJ of energy. Then 10000J or 10 kJ is stored by 0.0017 moles or 0.58 g of sucrose.
What is sucrose ?Sucrose is a disaccharide formed from one glucose and one fructose units. Sucrose is used as the table sugar. Sucrose can store the chemical energy as well as it can release it through decomposition.
One mole of sucrose stores an energy of 5878.8 KJ.
molar mass of sucrose = 342. 3 g/mol
then, no.of moles of sucrose which stores 10 KJ energy = 10 /5878.8 = 0.0017 moles.
Mass of 0.0017 moles = no.of moles × molar mass
mass = 0.0017 × 342.3 g/mol = 0.58 g.
Therefore, 0.58 g of sucrose stores 10 J of energy.
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The jewelers' mass unit for diamond is the
carat. By definition, 1 carat equals ex-
actly 200 mg.
What is the volume of a
1.07 carat diamond? The density of diamond
is 3.51 g/cm
Answer in units of cm".
Answer:
0.75 cm
Explanation:
You will convert 1.07 carat into mg then into g. You will multiply its reciprocal by 3.51g/cm to get the answer.
A dish is given to you, which contains a blackish yellow powder. When you move a magnet over it, black particles fly upwards and get stuck to the magnet. All that is left in the dish is a yellow powder, which you discover to be sulfur.
Was your original powder an element, compound, or mixture, and how do you know?
PLEASE ANSWER IF YOU HAVe an ANSWER OR NOt JUST FOR THE POINTS OR ELSE YOU WANT TO BE REPORTED!!!! please and thank you!
Answer:
It is a Mixture
Explanation:
It's a mixture because it was a substance made from mixing other substances together. And when the magnet went over the powder, the iron is lifted and not the sulfur. So the different parts of it can be separated by any physical means that allows the parts to seen separated
Answer:
its is a mixture
Explanation: because I did the question
What conclusion can you draw about the ability of metals to hold on to and attract electrons, as
compared to nonmetals?
Answer:
Metals react by losing electrons. So, there is high reactivity due to lower attraction. Non-metals react by gaining electrons. So, there is high reactivity due to higher attraction.
Explanation:
Metals react by losing electrons. So, there is high reactivity due to lower attraction. Non-metals react by gaining electrons. So, there is high reactivity due to higher attraction. Also, electrons lost by metals transfer to the nonmetals. It is easier for the metals to lose their valance electrons and form cations rather than gaining electrons.
Metals do not hold on to or attract electrons while nonmetals hold on to or attract electrons.
In the periodic table, metals are found towards the left hand side of the table while nonmetals are found towards the right hand side of the table.
Electron affinity of elements increase from left to right across the period. Electron affinity refers to the ability of elements to attract or hold electrons. This ability increase steadily across the period.
Usually, the electron affinity values of nonmetals are very high showing that they easily hold on to and attract electrons while the electron affinity values of metals is very low showing that they do not easily hold on to and attract electrons.
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How many moles of H2O can be produced when 2.75 moles of O2 react with an excess of NH3?
The number of moles of H₂O that could be produced is 3.3 moles
StoichiometryFrom the question, we are to determine the number of moles of H₂O that could be produced
First, we will write the balanced chemical equation for the reaction
The balanced chemical equation for the reaction is
4NH₃ + 5O₂ → 4NO + 6H₂O
This means,
4 moles of NH₃ reacts with 5 moles of O₂ to produce 4 moles of NO and 6 moles of H₂O
Now,
If 4 moles of NH₃ reacts with 5 moles of O₂ to produce 6 moles of H₂O
Then,
Excess NH₃ will react with 2.75 moles of O₂ to produce x moles of H₂O
x = \(\frac{2.75 \times 6}{5}\)
x = 3.3 moles
Hence, the number of moles of H₂O that could be produced is 3.3 moles
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