Arrange the elements in order of increasing ionization energy. chlorine, fluorine, gallium, phosphorus

Answers

Answer 1

Answer:  Ga, P,Cl, F

Explanation:  

Cl 1314  kJ/mole

F 1681  kJ/mole

Ga 579  kJ/mole

P 1012  kJ/mole


Related Questions

How should you add metal to the graduated cylinder so that it will not crack the glass at the bottom?
Get the metal as close to thn

Answers

Answer:

you tilt the cylinder at a slight angle so that the metal slides down the sides, rather than drops all it`s weight to the bottom

Calculate the mass of a liquid with a density of 0.92g/ml and a volume of 15 ml

Answers

Answer:

13.8g

Explanation:

Remember that density is equal to mass over volume

d=m/v

rearrange the problem and you get dv=m

(0.92g/mL)(15mL)=13.8g

This is a model of a water molecule which has two hydrogen atoms and one oxygen atom. Why ISN'T water considered to be a MIXTURE?
A.
Because the Hydrogen & Oxygen (or O & H) atoms bonded chemically
B.
Because the Hydrogen & Oxygen atoms are easily separated

Answers

A — H2O is one chemically bound molecule, and if you only have one molecule present then it can’t be a mixture, as what is it mixed with??

sound travels at 331m/s. How long would it take for sound to travel across lake tahoe, which is 21.6 miles long

Answers

Answer:

It would take sound 104.998 seconds to travel across lake tahoe.

Explanation:

First let's convert the miles to meters, so, 21.6 miles = 34754.4 meters

Now, we will divide this number in meters by 331. So, 34754.4 / 331 = 104.998

And what will the unit be? Seconds will be the unit for time here so 104.998 seconds.

       

What are the missing coefficients for the chemical equation
[ ] C2H2 + [ ] O2 → [ ] CO2 + [ ] H2O

Answers

Answer:

2C2H2 + 5O2 → 4CO2 + 2H2O

Explanation:

• 1. An object has a mass of 570g and a volume of 2280ml. Calculate its
density. 250 kg/m3

Answers

Answer:

Density=mass/volume

= 570/2280

=0.25g/ml

Which of the following statements about alcohols is false?
A. Ethanol is soluble in water.
B. Ethanol has a higher boiling point than ethane.
C. Ethanol produces hydrogen when it burns.
D. None of these

Answers

Answer:

It's C. Ethanol produces hydrogen when it burns

When burned, ethanol produces water and CO2.

If you can run 6km in 24 minutes, how many cm can you run in 5 hours?

Answers

Answer:

7500000cm/hr

Explanation:

6km=600000cm

24min=24/60hr=0.4hr

so, according to the question

6k/24km=600000cm÷0.4hr

=1500000cm/hr

therefore in 5 hours we can run:

5×1500000cm/Hr

=7500000cm/hr

A person can run "7,500,000 cm" in 5 hours.

According to the question,

A person can run 6 km in 24 minutes, i.e.,

= [tex]\frac{6}{24} \ km/min[/tex]

and,

5 hours = 300 minutes

then,

→  A person can run in 5 hours:

= [tex]\frac{6}{24}\times 300[/tex]

= [tex]\frac{1800}{24}[/tex]

= [tex]75 \ km[/tex]

By converting km into cm, we get

= [tex]7500000 \ cm[/tex]

So the above is the right answer.

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In the reaction 2H2 + O2 + H20, what coefficient should be placed in front of H2O to balance the reaction? 0 2 03 O 4​

Answers

Answer:

2

Explanation:

2×2

2O

soooo

2H2O means 4H2O

Someone plz help me :(

Answers

Answer:

B and A.

Explanation:

Many of the great scientists were religious. But the answer is not D.

A scientist may have strong opinions. That was certainly true of Newton. Most of the time he was right. Still the answer is not C. Science requires an open mind.

The answer is between A and B. Many discoveries were made looking at the natural world. That may provide the inspiration. But I don't think it is the answer. I'm going to say A

B is the other answer. Between A and B many scientific truths have been discovered.

The atomic number of the element with the maximum number of unpaired 2p electrons in the ground state is

1) 1 2) 7 3) 13 4) 8

Answers

8. As that is the answer. Pls mark me brainliest.

When scientists talk about mass and volume, they are talking about which
of these?
A. energy
B. heat
C. matter
D. a vacuum

Answers

Answer:

C. Matter

Explanation:

Answer:

C. Matter

Explanation:

Matter is anything that occupies space(volume) and has mass.

1. Lanthanides and actinides are kept separately in the modern periodic table. Why?

2. Differentiate between long period and short period in any two points.

- Help!! Random / Plagiarised answers will be reported! * ​

Answers

Answer:

1.. Lanthanides and actinides are kept separately in the modern periodic table Why?

Lanthanides and actinides are kept separately in the modern periodic table because of following reason:

If they are placed in the body of the periodic table, the periodic table will become extremely long and hard to recognizemore scientific and technical reason why they chose to keep the lanthanides and actinides away from the rest of the periodic table was to help in the grouping of elements in blocks

Explanation:

2. Differentiate between long period and short period in any two points.

Long period:

The 4th and 5th periods of the periodic table are called long periods. The long periods coontain 18 elements in them

short period:

The 2nd and 3rd periods of the periodic table are called short periods. The short periods contain 8 elements in them

5
Which of the following is true regarding the particle nature of a solid?
Particles in a solid -
A
move very little, so it cannot easily change its shape.
B
are relatively far apart, so it is highly compressible.
с
are in continual motion, and can slide past each other.
D
are very far apart, so it can easily change its shape.

Answers

Answer:

this answer is b no u can it very easy

Explanation:

because solid and liquid can compress easily

plz support me

Answer:

A. move very little, so it cannot easily change its shape.

What is 3 x 10^4 multiplied by 5 x 10^2?​

Answers

Answer:

15000000

Explanation:

30000 x 500=15000000. I believe... lemme know if I was wrong, hope this helps <3.

Animation shows a complete revolution of the Earth around the sun. What happens during this time? The moon makes one complete phase change. The moon makes one complete phase change. Four seasons occur on Earth. Four seasons occur on Earth. Earth experiences a complete day. Earth experiences a complete day. Day turns to night.

Answers

Answer:

Four seasons occur on Earth

Explanation:

When the Earth has completely one revolution around the Sun, then it has completed 1 year, and four seasons have occurred in the meantime.

Four seasons occur on Earth when the Earth completes a revolution around the Sun.

The following points can be considered:

The Moon makes one complete phase change when the Moon revolves around the Earth. The Moon makes one complete phase change by a month. Four seasons occur on Earth as a result of the  Earth completes one revolution around the Sun. The  Earth experiences a complete day as a result of the Earth’s rotation along its own axis. The day turns to night as a result of the Earth’s rotation along its own axis.

Therefore the correct answer is Four seasons occur on Earth.

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Which list includes terms that only describe carbon dioxide, (CO2)?

a
molecule, compound, mixture
b
molecule, compound, pure substance
c
atom, element, mixture
d
atom, element, pure substance

Answers

Answer:

b. molecule, compound, pure substance

Terms that only describe carbon dioxide are molecule, compound, pure substance.

What is mixture and compound?

In chemistry mixture is a combination of two or more different chemical elements which are not chemically bond. A mixture is the physical composition of two or more elements in which their individual identities are vanished and it also mixed by solutions, suspension and colloids.A compound can't be separate by physical separation and after the mixture you can't identified that it is compound or not.

In chemistry compound is combination of two or more different elements which are chemically bond. So compound is made up of  chemical bond. A compound can't be separate by physical separation and after the mixture you can't identified that it is compound or not.A mixture is the physical combination of two or more elements in which their individual identities are retained and it also mixed by solutions, suspension and colloids.

Therefore, terms that only describe carbon dioxide are molecule, compound, pure substance.

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#SPJ2

please solve this fast​

Answers

Answer:

b.troposphere

Explanation:

pls mark me brainliest

Explain how heat is conducted along a metal bar.

Answers

It causes the particles to vibrate and this causes the neighbouring particles to vibrate.

this process is continued until particles at the other vibrates.hence heat is transmitted from one place to another .Also it causes electrons to collide with the atoms of the metal.

Which two elements have the same number of energy levels with electrons in them?(1 point)

A_ krypton and neon

B_ boron and oxygen

C_ lithium and francium

D_ neon and sodium

Answers

Its B) Boron and Oxygen

The correct answer is B.

boron and oxygen have the same number of energy levels with electrons in them.

The energy level of an element is the region around the nucleus where its electron is likely to be, this corresponds to the period of the element in the periodic table.

Elements found in period 1, have one energy level.

Elements found in period 2, have two energy level.

Examples of elements found in period 2 include:

lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon

In the given options, only option B contains two elements with 2 energy level.

Thus, boron and oxygen have the same number of energy levels with electrons in them.

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A compound contains only carbon, hydrogen, and oxygen. Combustion of 8.544 mg of the compound yields 12.81 mg CO2 and 3.50 mg H2O. The molar mass of the compound is 176.1 g/mol. What are the empirical and molecular formulas of the compound

Answers

Answer:

The empirical formula is the formula with a minimum whole number ratio of the constituent atoms present in a molecule. While the molecular formula has the actual number of atoms of various elements present in the molecule of the substance.

Empirical formula is C₃H₄O₃

Molecular formula is C₆H₈O₆

This question involves finding the empirical and molecular formulas. Empirical formula is the one where minimum whole number ratio of the constituent atoms present in a molecule is shown whereas molecular formula is the one that shows the number of each type of atom that are present in a molecule.

The compound contains only carbon, oxygen and hydrogen and undergoes combustion. Thus;

[tex]C_{x}[/tex][tex]H_{y} O_{z}[/tex] + O₂ ⟶ xCO₂ + [tex]\frac{y}{z} H_{2} O[/tex]

The combustion yields 12.81 mg of CO₂.

From online sources, molar mass of CO₂ = 44 g/mol

number of moles of CO₂ = 12.81/44 = 0.291m mol

Mass of carbon in it is; C = 12 × 0.291 = 3.492 mg

Similarly the combustion yields 3.50 mg H2O.

molar mass of water = 18 g/mol

number of moles of water in it = 3.5/18 = 0.194m mol

Hydrogen has 2 nos in water and so;

number of moles of hydrogen = 2 × 0.194 = 0.388m mol

Mass of hydrogen = 1 × 0.388 = 0.388 mg

Compound is 8.544 mg and so;

Oxygen mass = 8.544 - (3.492 + 0.388) = 4.664 mg

Similarly, moles of oxygen that has molar mass of 16 is;

no of moles of oxygen = 4.664/16 = 0.2915m mol

Thus;

Ratio of C:H:O is; 0.291:0.388;0.2915

Simplifying this gives us the empirical formula ratio as;

3:4:3

Thus;

Empirical formula is C₃H₄O₃

Molar mass of C₃H₄O₃ = (12 × 3) + (1 × 4) + (16 × 3) = 88 g/mol

We are told that the molar mass of the compound is 176.1 g/mol.

Thus;

Molecular formula is; (176.1/88)C₃H₄O₃ = C₆H₈O₆

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How many moles of water are in 1.23x10^18 water molecules?

in scientific notation

Answers

Answer:

1.23x10^24 atoms/6.022x10^23 atom/mol = 2.04 mol H20

Explanation:

Can someone please help me​

Answers

Answer:

white

Explanation:

What is the Color of trioxonitrate(v)

Answers

Answer:

it's yellowish in color plz Mark me as brainliest

Answer:

It's a yellowish color like copper

What do we call planets that are not in our solar system

Answers

Exoplanets are the planets that are outside our solar system

Identify the products represented by letters A-F to complete each chemical equation, then write the net ionic equations for the reactions including the physical states of reactants and products. Use the standard enthalpies of formation to calculate the changes in the standard enthalpies of reaction.
a) NaOH(aq)+HCl(aq)⟶A(aq)+B(l)
A=

B=

Balanced net ionic equation:
Δ0rxn=


b) NaOH(aq)+NH4Cl(aq)⟶C(aq)+D(aq)+E(l)
C=
D=
E=
Balanced net ionic equation:
Δ0rxn=


c) HCl(aq)+NH3(aq)⟶F(l)
F=

Balanced net ionic equation:


Δ0rxn=

Answers

The product of a chemical reaction is what is remaining at the end of the reaction. The combination between reactant to form products can happen in a variety of ways including combination of ions in a solution to form new compounds

The correct compounds representing the variables and the net ionic equations are as follows:

a) A = NaCl

B = H₂O

Balanced net ionic equation: OH⁻(aq) + H⁺(aq) → H₂O (l)

ΔHrxn = Negative

b) C = NH₃

D = NaCl(aq)

E = H₂O(l)

Balanced net ionic equation: OH⁻(aq) + NH₄⁺(aq) → NH₃(aq) + H₂O(l)

ΔHrxn = Negative

c) F = NH₄Cl(aq)

Balanced net ionic equation: H⁺(aq) + NH₃(aq) → NH₄⁺(aq)

ΔHrxn = Negative

The reason the above values are correct are as follows:

a) Part (i)

The given chemical equation is

NaOH(aq) + HCl(aq) → A(aq) + B(l)

The chemical equation is the reaction between sodium hydroxide NaOH (aq) and hydrochloric acid HCl (aq), the product of the reaction is sodium chloride and water as follows;

NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l) + Heat

Therefore, we have;

A = NaCl, and B = H₂O

Part (ii)

The ionic equation is given as follows;

Na⁺(aq) + OH⁻(aq) + H⁺(aq) + Cl⁻(aq) → Na⁺(aq) + Cl⁻(aq) + H₂O (l)

Given that Na⁺(aq) and Cl⁻(aq) are spectator ions in the reaction, we have the balanced net ionic equation given as follows;

Balanced net ionic equation: OH⁻(aq) + H⁺(aq) → H₂O (l)

Part (iii)

ΔHrxn = Negative

b) Part (i)

The given chemical equation is NaOH(aq) + NH₄Cl(aq) → C(aq) + D(aq) + E(l)

The given reaction is between sodium hydroxide, NaOH(aq) and ammonium chloride, NH₄Cl(aq) and the products of the reaction are dissolved ammonia NH₃(aq), sodium chloride NaCl(aq), and water H₂O(l)

Therefore, we have;

NaOH(aq) + NH₄Cl(aq) → NH₃(aq) + NaCl (aq) + H₂O(l) + Heat

Therefore;

C = NH₃, D = NaCl(aq), E = H₂O(l)

Part (ii)

The ionic equation for the reaction is given as follows;

Na⁺(aq) + OH⁻(aq) + NH₄⁺(aq) + Cl⁻(aq) → NH₃(aq) + Na⁺(aq) + Cl⁻(aq) + H₂O(l)

The Na⁺(aq) and Cl⁻(aq) occur in both the reactants and products, therefore, they cancel out as spectator ions and we have;

Balanced net ionic equation: OH⁻(aq) + NH₄⁺(aq) → NH₃(aq) + H₂O(l)

Part (iii)

ΔHrxn = Negative

c) Part (i)

HCl(aq) + NH₃(aq) → F(l)

The given reaction is between hydrochloric acid and aqueous ammonia which has the product as ammonium chloride, NH₄Cl

Therefore, the reaction is given as follows;

HCl(aq) + NH₃(aq) → NH₄Cl(aq) + Heat

∴ F = NH₄Cl(aq)

Part (ii)

The ionic equation is given as follows;

H⁺(aq) + Cl⁻(aq) + NH₃(aq) → NH₄⁺(aq) + Cl⁻(aq)

Therefore, the chlorine ion Cl⁻(aq) occurs in both the reactant and product and can therefore, can be canceled out, and we have;

Balanced net ionic equation: H⁺(aq) + NH₃(aq) → NH₄⁺(aq)

Part (iii)

ΔHrxn = Negative

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Which statements describe density? Check all that apply.

Density is a chemical property of an object.
The density of an object is constant.
Density is a derived unit of measure.
Density is the sum of the mass and volume of an object.
The density of an object determines whether it will sink or float.

( pick multiple)

Answers

Answer:

density is the sum of the mass and volume of an object

If I have 4.9 moles of gas at a pressure of 2.0 atm and a temperature of 56 Celsius, what is the volume of the cantainer that the gas is
in? (R=0.0821 L*atm/mol*K)

Answers

Answer:  132 liters. or 130 liters with 2 sig figs.

Explanation:  Use the ideal gas law:  PV = nRT

We want V, so rewrite and plug in data:

Temperture must be in Kelvin (add 273.15 to

V = (nRT)/P

V = (4.9 moles)*(0.0821 L*atm/molK)*(328.2K)/(1atm)

V = 132 liters (3 sig figs).  130 liters with 2 sig figs

PLEASE HELP ON EASY CHEMICAL PROPERTIES

Answers

Answer:

1, just I) color.

Explanation:

Physical properties are the properties that can be observed without changing the composition of a substance, such as color, temperature, density, and boiling point.

A physical change is a change in the substance that only modifies its aggregation state, such as solidification, and boiling.

Chemical properties are the properties that need a reaction to being observed, such as combustibility, which needs a combustion reaction to being quantified.

When a chemical reaction occurs, and the composition of the substance change, it's a chemical change.

So, heating copper with carbon is a chemical reaction, and purification by electrolysis is too. Color is the only physical property.

Can someone please help me out !!!

Answers

Explanation:

Volume = FL - SL

= 39 - 33

= 6

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Why does The author of appoint text to include the quote from Jeffrey mclntyre in paragraph four. what changes are required if opportunity cost are gose to negative? Plz help with these 2 questions WILL GIVE BRAINLIEST!! 2/5 over 2/3, I don't understand WHAT IS A COMPUTER?? Q-3: Write down the summary of the given passage: [10 Marks]The third great defect of our civilization is that it does not know what to do with its knowledge. Science has given us powers fit for the gods, yet we use them like small children. For example, we do not know how to manage our machines. Machines were made to be mans servants; yet he has grown so dependent on them that they are in a fair way to become his master. Already most men spend most of their lives looking after and waiting upon machines. And the machines are very stern masters. They must be fed with coal, and given petrol to drink, and oil to wash with, and they must be kept at the right temperature. And if they do not get their meals when they expect them, they grow sulky and refuse to work, or burst with rage, and blow up, and spread ruin and destruction all around them. So we have to wait upon them very attentively and do all that we can to keep them in a good temper. Already we find it difficult either to work or play without the machines, and a time may come when they will rule us altogether, just as we rule the animals. And this brings me to the point at which I asked, What do we do with all the time which the machines have saved for us, and the new energy they have given us? On the whole, it must be admitted, we do very little. For the most part we use our time and energy to make more and better machines; but more and better machines will only give us still more time and still more energy, and what are we to do with them? The answer, I think, is that we should try to become mere civilized. For the machines themselves, and the power which the machines have given us, are not civilization but aids to civilization. But you will remember that we agreed at the beginning that being civilized meant making and linking beautiful things. Thinking freely, and living rightly and maintaining justice equally between man and man. Man has a better chance today to do these things than he ever had before; he has more time, more energy, less to fear and less to fight against. If he will give his time and energy which his machines have won for him to making more beautiful things, to finding out more and more about the universe, to removing the causes of quarrels between nations, to discovering how to prevent poverty, then I think our civilization would undoubtedly be the greater, as it would be the most lasing that there has ever been. Fill in the blank :)1. _______ mesas (those tables, over there)2. _______ libros (these books) Let us PracticeSheila bought a hamster in a small pet shop. To feed it properly, sheneeds to know its weight. If the hamster has a mass of 190.0 g, what isits weight? That is the pen. I like it very much (join with relative pronoun) Rey grew a tomato plant from seed. He measured its heightduring the month of June. How much did it grow betweenJune 21 and June 28?5 cm? 4 cm? 3 cm? Why should an acid be handled with caution pls helpMe with the right answer if sin2A=24/25 and sinA=4/5 then find the value of cosA What is the smallest integer greater than the square root of 325 2x 6y + 3x2 + 7y 14x 3x2 + 12x + y 3x2 12x y 3x2 12x + y 3x2 12x 13y mr tan is 42 years old and mrs tan is 44 years old now. they have 3 children who are 7 years, 5 years and 2 years old now. in how many year time will the sum of mr and mrs tan's age be 4 times of the sum of their 3 children's age use the following terms in the same sentence:prokaryotic,nucleus and eukaryotic a block occupies 0.2587 ft. what is the volume in mm? Whats minimum temperature for scrabble eggs What artistic metaphor was used to portray the State during the Ming dynasty?