Answer: I believe you may have meant "ionization energy?" Yes, for a neutral element this is a measure of the energy required to remove a valence electron.
Explanation: See above.
By definition, The energy required for the complete removal of 1 mol of electrons from 1 mole of gaseous atoms or ions is called Ionization energy. For a neutral element this energy is a measure of how easily the element forms an ion with a charge.
The electrons are attracted to the nucleus and it is necessary to provide energy to start them.
Ionization energy is the energy required to remove an electron from a gaseous atom, isolated and in a ground state. The electrons in the last shell, which are the weakest attracted to the nucleus, are always lost. In this way the neutral atom becomes a gaseous cation (positively charged ion).
The further away the electron is from the nucleus, the easier it is to remove it, that is, the less energy is needed.
Finally:
The energy required for the complete removal of 1 mol of electrons from 1 mole of gaseous atoms or ions is called Ionization energy. For a neutral element this energy is a measure of how easily the element forms an ion with a charge.
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99.985% of all atoms of element ? are of this
form.
Isotope ?-2 has an atomic mass of 2
0.015% of all atoms of element ? are of this form.
Answer: Isotope-1: Hydrogen (H)
Isotope-2: Deuterium (H)
Explanation: The periodic table shows that the smallest element in hydrogen (H), at an average atomic weight of 1.008. Hydrogen-1 has one proton, one electron, and no neutrons, which adds to 1 AMU. Hyrogen-2 is an isotope of hydrogen that contains 1 neutron in addition to the proton, bringing the mass to 2 AMU. It is only at 0.0156% abundance on Earth and is given the name Deuterium, sometimes refered to as "heavy water" when incorporated into a water molecule. A third isotope has 2 neutrons, and is called Tritium.
What are two factors that can change the rate of a chemical?
Answer:
the surface area of a solid reactant.
temperature.
presence/absence of a catalyst.
If a lab fire erupts, immediately
A) notify parent or guardian
B) run for fire extinguisher
C) throw water on fire
D) open window
Answer:
B
Explanation:
best way to put off the fire
Answer:
b
Explanation:
by the time you tell some one the fire could have spread and throwing water could spread the fire and opening the window adds fuel to the fire so it can burn hotter
*
Water vapor deposes into frost. What are the frost particles made of?
Molecules of Hydrogen
Molecules of H2O
Molecules of Oxygen
Molecules of Hydrogen and Molecules of Oxygen
Answer:
Molecules of H2O
Explanation:
Frost is condensed vapour and vapour is gaseous water. So, their particles are made up of same particles as water, i.e., H2O.
Which of these is a reason why nuclear power is important?
4.4.2 nuclear power
Answer:
Fossil fuels will run out soonWhich sentence best describes how matter moves through an ecosystem?
A.
Matter only moves from producers to decomposers.
B.
Matter only moves from consumers to producers.
C.
Matter is made by producers and is destroyed when eaten.
D.
Matter is continually cycled through an ecosystem.
Answer: D
Explanation: A healthy ecosystem is capable of exisitng based on the matter within that ecosystem. Energy is often supplied externally (e.g., the sun, geothermal, etc.) and is stored by the ecosystem in the form of chemical bonds made between the elements. Plants utilize matter (minerals, carbon dioxide, water) within the ecosystem (plus whatever is delivered via asteroid or candy wrappers). Animals depend on the plants for both energy and matter that is transformed into the compunds needed for their existence. Decomposers act to reduce complex matter (plants and animals) back into more basic compounds that then reenter the ecosystem as raw material for he next set of plants, animals, humans, and aliens.
what is a complex permanent tissue? mention the major functions of this tissue .
Answer:
Complex permanent tissue is defined as a collection of structurally dissimilar cells performing a common function or set of functions.
its functions are:
1.help in the transportation of organic material, water, and minerals up and down the plants.
2.it helps in transportation of food from leaves to other parts of plants.
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Which of the following statements correctly explains why the excretory system is different from the digestive system? (1 point)
The excretory system is different from the digestive system because it removes waste from the body by filtering water, which
includes mostly the by-products of metabolism
The excretory system is different from the digestive system because it removes waste from the body by filtering urine, which
includes mostly the by-products of metabolism
The excretory system is different from the digestive system because it removes waste from the body by filtering food, which
includes mostly the by-products of metabolism, filtering food
The excretory system is different from the digestive system because it removes waste from the body by filtering blood, which
includes mostly the by-products of metabolism,
The body is composed of several systems. Each system involves various organs and associated structures.
The correct answer is "The excretory system is different from the digestive system because it removes waste from the body by filtering food, which
includes mostly the by-products of metabolism."
The digestive system is mostly concerned with the breakdown of food and its subsequent absorption in the body. Several organs are responsible for this from the mouth to the small intestine.
The excretory system filters removes wastes from the body by filtering food substances which includes mostly the by-products of metabolism.
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So if I was shrunken into a tiny person what would you do to me like would you take care of me would you crush me with your bare feet or something
Explanation:
It is really bad when you are in some kind of problems and you don't have anybody to help you out. You do not even know where you will meet a person you treated good or bad. We have to treat every human equally,no matter the outcome.
So in my opinion, I would take care of you.
The 4f subshell of an atom contains 14 electrons. What is the maximum number
of electrons having same spin in it?
Answer:
I hope it will help you
Explanation:
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1) The efficiency of a practical machine is less that 100%.
1) The efficiency of a machine can be increased by using lubricants in the movable parts.
Explanation:
The efficiency of a practicle machine is less than 100% because some of the applied force is wasted due to oovercoming friction.The efficiency of a machine can be increased by using lubricants in the movable parts because lubricants helps to reduce friction.I hope it helped U
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Use you observation to determine which polymorph is in the customer’s returned chocolate sample.
Cocoa butter, the fat in chocolate, can crystallize in any one of 6 different forms (polymorphs, as they are called). Unfortunately, only one of these, the beta crystal (or Form V), hardens into the firm, shiny chocolate that cooks want. Form VI is also a stable hard crystal, but only small amounts of it form from the good beta (Form V) crystals upon lengthy standing. When you buy commercial chocolate it is in the form of beta crystals.
When you melt chocolate and get it above 94° F, you melt these much desired beta crystals and other types of crystals can set up. If you simply let melted chocolate cool, it will set up in a dull, soft, splotchy, disgusting-looking form. Even the taste is different. Fine chocolate has a snap when you break it and a totally different mouthfeel from the other cocoa butter forms.
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What is the signifcence of H, 2H, 3 H, H2, 2 He, Na,
Snaco, ouco, CO, 460?
H=hydrogen,H2=hydrogen atoms,
good morning friends
what is electric configuration?
write the electric configuration of chlorine..
Answer:
The systematic representation for the distribution of electrons in different energy levels of an atom or orbital of an atom is called electronic configuration .
The electronic configuration of chlorine is 1s^2,2s^2,2p^6,3s^2,3p^6
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(a) Explain why ammonia has a low boiling point
Explanation: Ammonia has pretty strong intermolecular forces because it can form hydrogen bonds, however it can't form as many hydrogen bonds per molecule as water and so its boiling point and melting point are lower.
As ammonia has less intermolecular force of attraction, it have usually low boiling point.
What is hydrogen bonding?Hydrogen bonding is not a covalent bond to a hydrogen atom, but rather a type of dipole-dipole attraction between molecules.
The attractive force between a hydrogen atom covalently bonded to a very electronegative atom such as an N, O, or F atom and another very electronegative atom causes it.
When a hydrogen atom bonded to an electronegative atom approaches another electronegative atom, strong intermolecular forces are created.
Simple molecules include hydrogen, ammonia, methane, and pure water. All of them have strong covalent bonds among both their atoms but much weaker intermolecular forces.
When one of these substances melts or boils, the weak intermolecular forces, not the strong covalent bonds, break.
Thus, ammonia usually have low boiling point.
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Which of the following is a scientific question you could ask about shoes?
A. Are modern sandals similar to sandals from the 1960s?
B. What shoes will be popular next summer?
C. What is my favorite shoe color?
D. Are there any running shoes that help people run faster?
Answer:
D. Are there any running shoes that help people run faster?
Explanation:
because it's the question that more seems scientific.
i hope this helps
what is force ?write its effects.
Answer:A force is a push or pull upon an object resulting from the object's interaction with another object.
A force acting on an object causes the object to change its shape or size, to start moving, to stop moving, to accelerate or decelerate
highlighters are like
pepper
salt
sugar
water
Answer:
wait what? is this a homework question?
How do the respiratory system and circulatory system interact? (1 point)
o
In the lungs, carbon dioxide is transferred to the blood and carried by red blood cells. Once it is distributed, the red blood cells
pick up oxygen and transport it back to the lungs, where is transferred to the lungs so it can be exhaled.
O
In the lungs, oxygen is transferred to the blood and carried by red blood cells..Once it is distributed, the red blood cells pick up
carbon dioxide and transport it back to the lungs, where is transferred to the lungs so it can be exhaled
The respiratory system and circulatory system do not interact because the respiratory system is related to breathing and the
circulatory system is related to blood.
O
In the lungs, air is transferred into the blood stream, where red blood cells deliver it to the heart. The heart then separates the
oxygen and sends it to the organs, while sending the waste back to the lungs to exhale.
Explanation:
The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart
What is the Color of trioxonitrate
Answer:
And the ans is yellowish
Consider 81.0 g samples of two different compounds consisting of only carbon and oxygen. Compound 1 consists of 22.1 g of carbon, and compound 2 has 34.7 g of carbon. Determine the ratio in whole numbers of the masses of carbon that combine with 1.00 g of oxygen between the two compounds.
Answer:
Compound 1: CO2
Compound 2: CO
Explanation:
The attachment illustrrates the calculations. The masses of both C and O are converted into moles of those two elelements and the resulting mole values are taken as ratios of the two elements. Compound 1 has twice as many moles of O as of C, so it's empirical formula must be CO2. Compound 2's O/C ratio is 1, so it becomes CO.
What is the Color of potassium heptaoxodichromate (v)
Answer:
orange
Explanation:
The color of potassium hepaoxodichromate is orange.
Answer:
it's very bright red orange in color.
Explanation:
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How many GRAMS of phosphorus are present in 2.75 moles of phosphorus pentachloride ?
Answer:
molecular weight of Phosphorus Pentachloride or grams The molecular formula for Phosphorus Pentachloride is PCl5. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Phosphorus Pentachloride, or 208.238761 grams.
Explanation:
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A gas has a volume of 4.25 m3 at a temperature of 95.0°C and a pressure of 1.05 atm. What temperature will the gas have at a pressure of 1.58 atm and a volume of 2.46 m3
Answer:
[tex]\boxed {\boxed {\sf 82.7 \textdegree C}}[/tex]
Explanation:
We are asked to find the temperature of a gas given a change in pressure and volume. We will use the Combined Gas Law, which combines 3 gas laws: Boyle's, Charles's, and Gay-Lussac's.
[tex]\frac {P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]
Initially, the gas has a pressure of 1.05 atmospheres, a volume of 4.25 cubic meters, and a temperature of 95.0 degrees Celsius.
[tex]\frac {1.05 \ atm * 4.25 \ m^3}{95.0 \textdegree C}= \frac{P_2V_2}{T_2}[/tex]
Then, the pressure increases to 1.58 atmospheres and the volume decreases to 2.46 cubic meters.
[tex]\frac {1.05 \ atm * 4.25 \ m^3}{95.0 \textdegree C}= \frac{1.58 \ atm *2.46 \ m^3}{T_2}[/tex]
We are solving for the new temperature, so we must isolate the variable T₂. Cross multiply. Multiply the first numerator by the second denominator, then multiply the first denominator by the second numerator.
[tex](1.05 \ atm * 4.25 \ m^3) * T_2 = (95.0 \textdegree C)*(1.58 \ atm * 2.46 \ m^3)[/tex]
Now the variable is being multiplied by (1.05 atm * 4.25 m³). The inverse operation of multiplication is division, so we divide both sides by this value.
[tex]\frac {(1.05 \ atm * 4.25 \ m^3) * T_2}{(1.05 \ atm * 4.25 \ m^3)} = \frac{(95.0 \textdegree C)*(1.58 \ atm * 2.46 \ m^3)}{(1.05 \ atm * 4.25 \ m^3)}[/tex]
[tex]T_2=\frac{(95.0 \textdegree C)*(1.58 \ atm * 2.46 \ m^3)}{(1.05 \ atm * 4.25 \ m^3)}[/tex]
The units of atmospheres and cubic meters cancel.
[tex]T_2=\frac{(95.0 \textdegree C)*(1.58* 2.46 )}{(1.05 * 4.25 )}[/tex]
Solve inside the parentheses.
[tex]T_2= \frac{(95.0 \textdegree C)*3.8868}{4.4625}[/tex]
[tex]T_2= \frac{369.246}{4.4625} \textdegree C}[/tex]
[tex]T_2 = 82.74420168 \textdegree C[/tex]
The original values of volume, temperature, and pressure all have 3 significant figures, so our answer must have the same. For the number we calculated, that is the tenths place. The 4 in the hundredth place to the right tells us to leave the 7 in the tenths place.
[tex]T_2 \approx 82.7 \textdegree C[/tex]
The temperature is approximately 82.7 degrees Celsius.
Why are intensive properties useful for identifying a substance?
a
They are chemical properties.
b
They describe the amount of substance you have.
c
They are physical properties.
d
They do not depend on the amount of substance you have.
Answer:
d
They do not depend on the amount of substance you have.
Intensive properties useful for identifying a substance because they do not depend on the amount of substance you have.
WHAT ARE INTENSIVE PROPERTIES:
Intensive properties are physical properties of a substance that do not depend on the size or amount of a sample e.g. density, temperature, colour, boiling point etc. On the other hand, extensive properties are dependent on the size of a substance e. g. mass, volume, weight etc. Intensive properties of a substance do not change with respect to size, hence, they can be used in the identification of a substance.Learn more: https://brainly.com/question/3006850?referrer=searchResults
Can someone PLEASE help me with this im struggling bad
Answer:
4.5+2.34= 6.844.5-5 =-0.56.00+3.411= 9.4113.4×2.32 = 7.8887.77/2.3= 3.377. 1200×23.4=28080
9. = 78.512
10. =341.199
11= 7.45
12 =65.0023
13.=3400210.34
Explanation:
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if you have observed something about the world and want to investigate it further, what are you seeking to do?
I'm seeking to ASK A QUESTION in accordance to the scientific method.
WHAT IS SCIENTIFIC METHOD:
Scientific method is the step by step procedure employed by scientists in order to investigate an occurrence or phenomenon in the world.The steps involved in the scientific method, which begins with making an observation, are as follows:
Make an observationAsk a question based on the observationFormulate a hypothesisTest the hypothesis via experimentationAnalyze result dataDraw conclusionAccording to this question, after observing something about the world and I want to investigate it further by asking a question as the next step.
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Which element would have the lowest electronegativity?
an element with a large number of valence electrons and a small atomic radius
an element with a large number of valence electrons and a large atomic radius
an element with a small number of valence electrons and a large atomic radius
an element with a small number of valence electrons and a small atomic radius
Answer:
an element with a large number of valence electrons and a large atomic radius
Explanation:
Electronegativity means a tedency when an atom attracts bonding electrons in a covalent bond situation.
» If an atom has many valency electrons [ empty orbitals in outermost shell ], it has difficulty in attracting electrons hence electronegativity low.
» If an atom is large, its nuclear attraction force of incoming electrons is low hence low electronegativity.
[tex].[/tex]
The element that would have the lowest electronegativity is an element with a small number of valence electrons and a large atomic radius.
Both electronegativity and atomic radius are periodic trends. Electronegativity increases across the period while atomic radius decreases across a period.
An element that has a small number of valence electrons and a large atomic radius will most likely be a metal hence it will have the lowest electronegativity.
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Which of these answers describes a scientific law?
(Pls)
Answer:
big ablsolty long pp
Explanation:
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Which equation represents a decomposition reaction?
O 4P +502 → 2P205
O H2SO4 + 2NaOH → Na2SO4 + 2H2O
O 2C8H18 + 2502 → 16CO2 + 18H2O
O 6NaNO3 → 6NaNO2 + 302
There are various type of chemical reactions in chemistry like combination reaction , displacement reaction. One of these is the decomposition reaction. The correct option is option D.
What is decomposition reaction?Decomposition reaction is the one in which molecules breaks down in its constituent in presence of energy. Energy can be in any form, it can be light energy , heat energy.
Decomposition of water is done by providing electricity and the reaction is called electrolysis. Lysis means to break. To give decomposition reaction molecule must have more than one element.
The fourth reaction describe a decomposition reaction (NaNO3 decomposed to become NaNO2 and O2). First and third reaction are considered combustion reaction (reacting with oxygen). Second reaction is acid-base reaction.
Therefore, the correct option is option D.
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