Which type of crystal is typified by a sea of delocalized electrons
surrounding the lattice?
O A. lonic
B. Metallic
OC. Macromolecular
D. Chemical
Reset Selection

Answers

Answer 1

B.metallic is the answer hope this helped

Answer 2

The correct answer is option B. Metallic.

What explains the structure of metals and delocalized electrons?

Metal is composed of a huge structure of atoms arranged in a regular pattern. Electrons from the outer shell of a metal atom are delocalized and can move freely throughout the structure. This sharing of delocalized electrons results in strong metal bonds.

Metallic bonds are electrostatic attraction between metal cations and the negatively charged ocean of delocalized electrons. The sea of ​​delocalized electrons contains only valence electrons, not core electrons.

Learn more about Metal here: https://brainly.com/question/4701542

#SPJ2


Related Questions

Latent heat of vaporization is used to (1 Point) (a) overcome the forces of attraction between molecules in solid-state. (b) increase the kinetic energy of molecules in a liquid state. (c) overcome the forces of attraction between molecules in a liquid state. (d) increase the kinetic energy of molecules in the vapour state.

Answers

Answer:

Not sure what the answer is

Explanation:

I did this a while ago and dont remember sorry

The topmost layer of the Earth is made up of large pieces that fit together like a puzzle. However, these pieces don't stay still, and sometimes they rub against each other. When these large sections of the Earth’s crust, called tectonic plates, hit each other, they send vibrations through the surface of the Earth. These vibrations are seismic waves. Seismic waves are just like the ripples in a pond. But instead of traveling through water, they travel through the Earth. When they reach the Earth's surface, they make the ground shake. That's an earthquake.
Earthquakes are the result of?
A ripples traveling through water.
B Earth’s topmost layer sinking.
C vibrations from seismic waves.
D tectonic plates staying still.

Answers

Answer:

C- vibrations from seismic waves

Answer:

C vibrations from seismic waves.

Explanation:

The shifting rock in an earthquake causes vibrations called seismic waves.

Help!

A student dissolves 1 gram of sugar in 10 grams of water. She then determines the mass of the solution. What is the mass of the dissolved sugar and water?

a. less than 11 grams
b. more than 11 grams
c. 11 grams
d. It is not possible to tell from the data

Answers

Answer:

11 grams

Explanation:

Pressure increases from Earth’s surface toward the center of Earth.

True Or False

Answers

Answer:

True

Explanation:

The center receives pressure which is what creates convection currents

What does the law of conservation of matter show?
A. That the total number of atoms in matter will never change.
B. That matter can never change form.
C. That atoms will combine in the simplest possible arrangement.
D. That atoms in matter can never be rearranged.

Answers

Answer: A) That the total number of atoms in matter will never change.

Explanation: Matter cannot be destroyed nor created. Matter is made up of atoms. The amount of atoms in an object will never change, even when changed into a different form.

Ex. When ice cubes melt there is still the same amount of water just in a different form.

Answer:

A

Explanation:

What information does a phase diagram give?
A. The effect of temperature on volume changes of substances
B. The effect of temperature and pressure on the phase of a
substance
C. The effect of concentration on the freezing point of a solution
D. The effect of oxidation number on the melting point of a metal

Answers

The effects of temperature

What is the answer to this I need help please

Answers

Answer : The boron-11 isotope is the most abundant.

Explanation :

As we are given that:

Average atomic mass of boron = 10.81 amu

Mass of boron-10 = 10.0129 amu

Mass of boron-11 = 11.0093 amu

As we know that the average atomic mass of an element is always closest to the most abundant isotope.

Out of the two boron isotopes, B-11 is closest in mass to the weighted average. Therefore, it is the most abundant.

Hence, the boron-11 isotope is the most abundant.

What is the chemical formula for the molecule modeled?
There are several ways to model a compound. One type
of model is shown.
A)СНО
B)C4H1102
C)C6H12O2
D)C6H90

Answers

Answer:

Tue answer is B - C4H1102

The chemical formula for the molecule modeled is C₆H₁₂O₂. Therefore, option C is correct.

What is a chemical formula ?

The term chemical formula is defined as the elements that form the compound and the numbers of atoms of each element in the smallest unit of that compound. Water is consist of hydrogen and oxygen in a 2:1 ratio. The chemical formula for water is H₂O.

There are 3 main types of chemical formulas that are empirical formula, molecular formula and structural formula.

Empirical formulas represent the simplest whole-number ratio of atoms in a compound, molecular formulas represent the number of each type of atom in a molecule, and structural formulas represent how the atoms in a molecule are bonded to each other.

In a given molecule modeled C₆H₁₂O₂ we see that, there are six atoms of carbon, 12 atoms of hydrogen and 2 atoms of oxygen.

Thus, option C is correct.

To learn more about the chemical formula, follow the link;

https://brainly.com/question/11995171

#SPJ2

State a condition required for a substitution reaction to occur

Answers

Explanation:

substitution reaction (also known as single displacement reaction or single substitution reaction) in a chemical reaction during which one functional group in chemical compound is replaced by an other functional group. a good example of a substitution reaction is halogenation .

these are easily extracted with a pH solution of greater than 7? which one

A) acid drugs
B) metabolites
C) base drugs
D) derivatives

Answers

Answer:

base drugs

Explanation:

The pH scale is a scale graduated from 0-14. It is used as an indicator of the degree of acidity or alkalinity. A pH of 0-6.9 indicates acidity. A pH of 7 indicates that the solution is neutral. A solution of pH above 7 indicates that the substance is basic.

It is thus a correct statement to say that any substance that dissolves in solution to produce a solution of pH greater than 7.0 is a basic substance.

If we look at the options closely, it is only a basic drug that will dissolve in water to yield a basic solution of pH greater than 7.0 hence the answer.

What does Avogadro's law say about a gas atSTP? A; 1 L of any gas contains 22.4 moles at STP B; 1 L of any gas has a pressure of 22.4 atm at STP C; All gases are at 22.4 atm at STP D; 1 mole of any gas has a volume of 22.4 L at STP

Answers

Answer: 1 mole of any gas has a volume of 22.4 L at STP

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.

According to ideal gas equation:

[tex]PV=nRT[/tex]

P = pressure of gas = 1 atm (at STP)

V = Volume of gas = ?

n = number of moles = 1

R = gas constant =[tex]0.0821Latm/Kmol[/tex]

T =temperature =[tex]273K[/tex]  (at STP)

[tex]V=\frac{nRT}{P}[/tex]

[tex]V=\frac{1mol\times 0.0820 L atm/K mol\times 273K}{1atm}=22.4L[/tex]

Thus 1 mole of every gas occupies 22.4 L at STP

Answer:

1 mole of any gas has a volume of 22.4 L at STP

Explanation:

ap3xx

I'll give brainliest
In going through the three physical states of matter, water would normally undergo changes in
A) composition.
B) density.
C) mass.
D) weight.

Answers

Answer:

COMPOSITION

Explanation:

Brainliest plz

Based on the Lewis/electron dot representation
of the two atoms, predict the ratio of metal
cationic (+) atom to nonmetal anionic (-) atom in the compound

Answers

Answer:

A. 1:3

Explanation:

If we look at the ions shown in the image attached to the question, we will notice that we have aluminum (Al^3+), a trivalent ion combining with the iodide ion (I^-).

Aluminum can easily give out its three outermost electrons to three atoms of iodine. If aluminum gives out its three electrons, it achieves the stable octet structure. Iodine atoms have seven electrons in their outermost shell. They only need one more electrons to complete their octet. This one electron can be gotten by the combination of three iodine atoms with one atom of aluminum. One electron each is transferred from the aluminum atom to each iodine atom to form AlI3 with a ratio of 1:3.

Lewis dot structure is a diagrammatic representation of valence electrons in an atom of a molecule.

The ratio of the cations to anions in the given compound is 1:3.

In the given figure, Aluminum has 3 electrons, which can be donated to iodine. Aluminum has atomic number 13, this means that if the element donates three electrons then it will attain a stable electronic configuration.

In the Iodine atom, each iodine needs only one electron to complete its octet. Thus, three atoms of iodine will be required to gain electrons from aluminum.

Thus, the ratio cation to the anion is 1:3.

To know more about lewis dot structure, refer to the following link:

https://brainly.com/question/4144781

Using the activity series provided. Which reactants will form products? Na > Mg > Al > Mn > Zn > Cr > Fe > Cd > Co > Ni > Sn > Pb > H > Sb > Bi > Cu > Ag Ag +NaNO3 Right arrow. Fe + Al2O3 Right arrow. Ni + NaCl Right arrow. Fe + Cu(NO3)2 Right arrow.

Answers

Answer:

D

Explanation:

To solve this we must be knowing each and every concept related to  activity series. Therefore, Fe + Cu(NO[tex]_3[/tex])[tex]_2[/tex] reactants will form products. The correct option is option D.

What is activity series?

We refer to the metal series in the image above as the activity series. This serves as a guide so that we can identify the byproducts of a metal displacement process. For displacement to take place, a metal must be placed over the other metallic combination.

Ag is significantly lower than Na in the series so, nothing happens. Since Al is above Fe, there is no response. Ni is below Na, hence no reaction will take place. A displacing reaction will happen because Fe is a greater active metal than copper.

Therefore, Fe + Cu(NO[tex]_3[/tex])[tex]_2[/tex] reactants will form products. The correct option is option D.

To know more about activity series, here:

https://brainly.com/question/4406404

#SPJ6

Why you cannot add 0.3 moles of calcium fluoride directly to 1L of water to make a 0.3 M solution ? please only 5 mins left

Answers

Answer:

Because it's not soluble in water, need to be heated acidic solution

Explanation:

Calcium Fluoride Formula: CaF2  Comprises of Ca2+ and F−

H2O = Water H+ O2- OH-

Insoluble in water

In order to dissolve a salt, you have to break apart the ions and hydrate them via a solvent.

Need to read

HSAB concept( Pearson acid-base concept) is an initialism for "hard and soft (Lewis) acids and bases"

So F- is a Halogen which is a Hard Base

And OH- is a Hard base as well

And H- is a soft base

So soft acids react best with soft bases and hard acids react best with hard bases.

Bases don't react with other bases.

a student is asked to draw an atom of sulfur on a board. the pictures below represents what the student drew. what is wrong with this sulfur atom

plzzzz help i need to finish up

Answers

Ur momma eheheheheheh

what are the steps to go from the names of compounds to the formulas

Answers

Answer:

Explanation:

write down the formulas, use the expressions and formulas to convert

PLEASE HELP WILL GIVE 100 points


Record the data from each trial in the data chart below. Be sure to fill in the chart completely.
Test One
Parent 1: FF
Parent 2: FF
Phenotype ratio:
short fur: long fur
Test Two
Parent 1: Ff
Parent 2: FF
Phenotype ratio:
short fur: long fur
Test Three
Parent l: ff
Parent 2: ff
Phenotype ratio:
short fur: long fur

Answers

Answer: Test One

Parent 1: FF

Parent 2: FF

Phenotype ratio:

short fur: long fur

Test Two

Parent 1: Ff

Parent 2: FF

Phenotype ratio:

short fur: long fur

Test Three

Parent l: ff

Parent 2: ff

Phenotype ratio:

short fur: long fur

Explanation:

Which of the following is an example of a mixture?
A. NaCl
B. CO2 + H2 + O2
Ос. Са
D. C6H1206
Reset Selection

Answers

Answer:

B.

Explanation:

CO2 + H2 + O2 - are 3 individual substances.

if the freezing point of a substance is 68°C, what is its melting point?

Answers

The melting point will be the freezing point times .14

The melting point of the substance has been [tex]\rm 68^\circ C[/tex].

The freezing point has been defined as the temperature above to which the substance exists in the liquid state, while below which the substance exist in the solid state.

Freezing point and melting point

The melting point has been the temperature at which the solid starts to convert into the liquid state. The melting point and freezing point for the substances has been the same temperature.

Thus, the melting point of the substance whose freezing point has been [tex]\rm 68^\circ C[/tex] has been [tex]\rm 68^\circ C[/tex].

Learn more about freezing point, here:

https://brainly.com/question/2292439

Carbon-14 is a common isotope of the element. How many electrons
does it contain?
O 14
O 12
O 8
O 6

Answers

i think 8 or 6 im not sure

What is one way in which chemistry affects your everyday life?
A. Refrigerators use energy more efficiently than they did 10 years
ago.
B. Tap water is safe to drink because it is monitored for harmful
substances.
c. Weather forecasts are now more accurate because of radar.
D. Watches are now more accurate because they are digitalized.

Answers

Answer: B

Explanation: Water is filtered with a bunch of chemicals which makes it drinkable.

B, the filtration system used to make drinking water safe consists of chemistry

What does Boyle's law state about the relationships among temperature, volume,
and pressure?
When the pressure of a gas decreases, the volume and the temperature of the
gas both increase.
As the volume of a gas increases, the temperature and pressure of the gas both
decrease.
Provided temperature remains constant, the volume and pressure of a gas are
inversely related
When the temperature of a gas increases, the volume and pressure of the gas
both decrease.

Answers

Answer:

Provided temperature remains constant, the volume and pressure of a gas are  inversely related

Explanation:

Robert Boyle discovered that as long as the temperature of a gas remains constant, the relationship between the volume and the pressure of the gas is inverse. Basically, as the volume of a gas increases, its pressure decreases. As the pressure of the gas increases, its volume decreases.

Boyle's law states relationships among temperature, volume, and pressure are the provided temperature remains constant, and the volume and pressure of a gas are inversely related. The correct option is C.

What is Boyle's law?

Robert Boyle gave the Boyle's law. It is also called Boyle–Mariotte law, or Mariotte's law. The law states that at a constant temperature, the volume of the gas increases with the increase in pressure. They are inversely proportional to each other.

The formula of Boyle's law is

P₁V₁=P₂V₂

P₁ = first pressure

P₂ = second pressure

V₁ = first volume

V₂ = second volume

This law tells the relationship between volume and pressure and the temperature of the air.

Thus, the correct option is C. Provided temperature remains constant, the volume, and pressure of a gas are inversely related.

To learn more about Boyle's law, refer to the below link:

https://brainly.com/question/1437490

#SPJ2

Can someone please show me how to solve this?

Answers

Answer:

4.38 Grams of C

Explanation:

How many grams of C are required to react with 52.6grams of Fe2O2?

Fe2O2 + C = 2Fe + CO2

Ratio 1:1

Fe2O2 = 144 Molar Mass

Fe2O2 52.6/144 = 0.365Moles of Fe2O2

Fe =56grams/mole =  Charge 2+, 3+

O = 16grams/mole = Charge 2-

C = 12grams/mole = Charge 4+

So Ratio is 1:1 so we only need 0.365Moles of C so 4.38grams

How many grams of aluminum oxide would be produced from the reaction of 0.25 grams of aluminum with excess oxygen gas?

Answers

Answer:

0.472 grams of aluminum oxide would be produced from the reaction of 0.25 grams of aluminum with excess oxygen gas.

Explanation:

First of all, you should know that the balanced reaction that occurs:

4 Al + 3 O₂ → 2 Al₂O₃

Then, by stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts are produced in moles:

Al: 4 molesO₂: 3 molesAl₂O₃: 2 moles

Being:

Al: 27 g/moleO: 16 g/mole

The molar mass of the compounds participating in the reaction is:

Al: 27 g/moleO₂: 2*16 g/mole= 32 g/moleAl₂O₃: 2*27 g/mole + 3*16 g/mole= 102 g/mole

Then, by stoichiometry of the reaction, the following amounts of mass react and are produced:

Al: 4 moles*27 g/mole= 108 gO₂: 3 moles*32 g/mole= 96 gAl₂O₃: 2 moles*102 g/mole= 204 g

 

Now it is possible to apply the following rule of three: if 108 grams of Al produce 204 grams of Al₂O₃, 0.25 grams of aluminum how much mass of Al₂O₃ will it produce?

[tex]mass of Al_{2} O_{3} =\frac{0.25 grams of Al*204 grams of Al_{2} O_{3} }{108 grams of Al}[/tex]

mass of Al₂O₃=0.472 grams

0.472 grams of aluminum oxide would be produced from the reaction of 0.25 grams of aluminum with excess oxygen gas.

Answer:

D

Explanation:

CAN I PLEASE GET SOME HELP PLEASE PLEASE HELP ME I WOULD APPRECIATE IT AND THANK YOU!! WICH of the following is an expression of Avogadro's law (k=constant) A)V=kn B)V=k/n C)nV=k D)V=k no

Answers

Answer:

Vn = k

Explanation:

[tex]Vn = k[/tex]

From the web :

Avogadro's Law is stated mathematically as follows: Vn=k, where V is the volume of the gas, n is the number of moles of the gas, and k is a proportionality constant

Avogadro's Law is stated mathematically as follows: Vn=k, where V is the volume of the gas, n is the number of moles of the gas, and k is a proportionality constant.

What is Avagrado's law?

According to Avogadro's Law, all gases have an identical number of molecules in an equal volume at a given temperature and pressure. Amedeo Avogadro, an Italian chemist and physicist, first described the law in 1811.

At 0 °C and 1 abm pressure, the molar volume of all ideal gases is 22.4 litres.  If a gas's temperature and pressure remain constant, its volume will also grow as its amount increases.

If a gas's pressure and temperature are both constant, its volume falls as its volume of gas does. Every time you blow a balloon up, you demonstrate Avogadro's Law.

Therefore, Avogadro's Law is stated mathematically as follows: Vn=k, where V is the volume of the gas, n is the number of moles of the gas, and k is a proportionality constant.

To learn more about Avogadro's Law, refer to the link:

https://brainly.com/question/4133756

#SPJ7

For the following compound, determine each element and if the element is a metal or nonmetal. Also determine if the compound has an ionic, covalent, or metallic bond:



NaCl

SO2

CaO

HF

NO2

H2O

Answers

NaCl - also known as sodium chloride or table salt; an ionic bond; it’s a chemical compound, so both
SO2 - also known as sulfur dioxide; a covalent bond; nonmetal
CaO - also known as calcium oxide; an ionic bond; metal
HF - also known as hydrogen fluoride; polar covalent; metal
NO2 - also known as nitrogen dioxide; covalent; nonmetal
H2O - also known as water; covalent; nonmetal

What is pressure?
O A. The heat required to change the temperature of a gas
OB. The force of gas molecules hitting their container
O C. The mixing of gas molecules due to random motion
D. The space occupied by gas molecules moving around

Answers

Answer:

B.

Explanation:

The force of gas molecules hitting their container is pressure.

Because pressure = force/area.

B) the force of gas molecules hitting their container

Aluminum hydroxide is often present in antacids to neutralize stomach acid (HCl). If 14.0 g aluminum hydroxide is present in an antacid tablet, determine the theoretical yield of aluminum chloride produced when the tablet reacts with stomach acid. If the actual yield of the aluminum chloride from this tablet is 22.0 g, what is the percent yield?

Answers

Answer:

Percent Yield = 91.97%

Explanation:

Aluminum hydroxide Formula: Al(OH)3 Molar mass: 78 g/mol

Stomach acid Formula: HCl Molar mass: 36.46 g/mol

Aluminum Chloride Formula: AlCl₃ Molar mass: 133.34 g/mol

14g Al(OH)3

2Al(OH)3 + Cl2 → 2Al(OH)3Cl

Balanced equation

14/156 = 0.0897 Moles of Al(OH)3

Ratio is 2:1:2 so same ratio for Al(OH)3 to AlCl₃

0.0897 x 266.68 = 23.92grams of AlCl₃

Theoretical yield of aluminum chloride

Actual yield aluminum chloride 22.0 g

Percent yield?

Percent Yield = (actual Yield/Theoretical yield) x 100

Percent Yield = (22/23.92) x 100

Percent Yield = 91.97%

The percent yield of aluminum chloride in the neutralization reaction has been 91.97%.

The balanced reaction for neutralization of stomach acid with aluminum hydroxide has been:

[tex]\rm Al(OH)_3\;+\;3\;HC\l\rightarrow\;AlCl_3\;+\;3\;H_2O[/tex]

The reaction has been determined that 1 mole of aluminum hydroxide forms 1 mole of aluminum chloride. The moles of aluminum hydroxide has been given as:

Moles =  [tex]\rm \dfrac{Mass}{Molecular\;mass}[/tex]

Moles of Aluminum hydroxide = [tex]\rm \dfrac{14}{156}[/tex]

Moles of Aluminum hydroxide = 0.0897 mol.

Thus, the aluminum chloride formed has been:

1 mole Aluminum hydroxide = 1 mole aluminum chloride

0.0897 mole aluminum hydroxide = 0.0897 mole aluminum chloride

The mass of Aluminum chloride formed has been:

0.0897 mole aluminum chloride = [tex]\rm \dfrac{Mass}{266.68}[/tex]

Mass of Aluminum chloride = 0.0897 mol × 266.68 g/mol

Mass of Aluminum chloride = 23.92 grams

The %yield can be given as:

%Yield = [tex]\rm \dfrac{Actual\;yield}{Theoretical\;yield}\;\times\;100[/tex]

The theoretical yield = 23.92 grams

The actual yield = 22 grams

% Yield = [tex]\rm \dfrac{22}{23.92}\;\times\;100[/tex]

% Yield = 91.97%.

The percent yield of aluminum chloride in the neutralization reaction has been 91.97%.

For more information about the neutralization reaction, refer to the link:

https://brainly.com/question/25199574

Need help on #1 thank youu!

Answers

oil , water , wood im pretty sure

Answer:

Oil---> Wood---> Water

Explanation:

Denser things always go on bottom. Since oil is on top is the least dense among those, and then comes wood and then finally water.

Other Questions
if this net were to be folded into a cube which number would be opposite of the number 1? In the balanced equation, 2N2O5 = 4NO2 + O2, what is the coefficient for the diatomic oxygen? Please help quickly I dont understand Find the slope of the line that passes through the points (-1, -2) and (-9, -2) Which item is the best example of an artifact from the passage that revealssomething about Mr. Johnson?Mr. Johnson's office stretched but in front of us. On asturdy oak desk, a book titled Aviation for Beginners wasso worn that the cover was about to fall off. Sunlightpoured into the office through huge windows that madethe glaze of the hardwood chairs gleam like chocolate.A. The bookB. The deskC. The sunlightD. The chairs z=5 is a solution choose 3 answers A8=z+3Bz-1=6zC20=40zD12z=60E12+z=60 3. Making Judgments Do you think Bolvar's poli-cies in dealing with the Spanish and theAmericans were fair? Why or why not?Help plsss What is the volume, in terms of , for a cylindricalcontainer with a radius of 3.25 centimeters and aheight of 10 centimeters? (use the formula V= I1r2 h) help? Given the points (0, 9) and (2, 3) find the slope. In which sentence does not have pronoun antecedent agreement?A dave and i like sundays because we can watch footballB the police officers arrested the suspected and put it in jail.C the old wooden bed creaked when the child sat on it.D kyle wasn't surprised when he saw the bus waiting at he club. The value of [2-3(2-3)-1]-1 is Im really confused on how I would identify 3 distinct subject areas in the humanities. I want to say art and language but i cant think of another one. If someone could help me out that would be great. Also explain why it is an area of humanities so i can get a better understanding. please solvethanks At a pet store, Davina counted 12 parrots out of 20 birds. Which is an equivalent ratio of parrots to birds at the pet store? The HCF of two numbers is 11, and their L.C.M is 368. If one number is 64, then the othernumber is . Which sentence best contributes to the mood of hopelessness in the excerpt? SUPER EASYJUST HELP MEUse your knowledge of definitions to select the correct word in the sentence below.Customers recognize the ___ swoosh without even the letters.A) trademarkb) hallmarkc)feudal The probability of getting a number divisible by 3 is 3/10 using a game spinner.The denominator of that probability is: ? . .. ", " "" , . ??? f (x) = x + 10x + 24.Help plzz !!