How might a molecule have a very strong molecular dipole?

Answers

Answer 1

Answer:

When you make the electronegativities of A(Positive partial charge) and C (Negative Partial charge) less and have B with a strong electronegativity to create a very strong molecular dipole. ... Both molecules possess strong molecular dipoles.


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NEED HELP!PLEAE WITH CHEMISTRY!

Answers

ANSWER

3. both covalent and ionic

EXPLANATION

Sodium Phosphate is an ionic compound formed by two ions, Sodium Na+ and Phosphate PO−3 . In order for these two polyatomic ions to bond the charges must be equal and opposite. Therefore, it will take three +1 sodium ions to balance the one -3 phosphate ion. However, polyatomic ions are held together by covalent bonds, so this compound contains both ionic and covalent bonds.

how is a standard hydrogen atom different from a hydrogen ion?

Answers

Answer:

a hydrogen ion will have more or fewer electrons than a standard hydrogen atom.

Explanation:

ions are atoms that have lost or gained elections. this applies to ions in general.

I need help with this

Answers

Answer:

129 units cubed

Explanation:

There are ten spaces between 120 and 130, so we can infer that each line represents a change in volume of 1 unit. The volume of the substance in the graduated cylinder looks like it's 1 under 130, so its volume is 129 units.

Hopefully this was helpful! :)

Why is knowledge of the activity series crucial in choosing which metal to build things with?

Answers

Answer:

activity series is a list of substances ranked in order of relative reactivity.

For example, magnesium metal can displace hydrogen ions from solution. So magnesium is more reactive than hydrogen:

Mg(s) + 2H⁺(aq) → H₂(g) + Mg²⁺(aq)

Zinc metal can also displace hydrogen ions from solution:

Zn(s) + 2H⁺(aq) → H₂(g) + Zn²⁺(aq)

so zinc is also more active than hydrogen.

But magnesium metal can displace zinc ions from solution:

Mg(s) + Zn²⁺(aq) → Zn(s) + Mg²⁺(aq)

so magnesium is more active than zinc.

The activity series including these elements would be Mg > Zn > H.

Chemists have built up a complete activity series in a similar way.

The most active metals are at the top of the table; the least active are at the bottom.

Any metal that is higher in the series will displace a metal that is below it in a

The knowledge of the activity series in choosing which metal to build things with because; it provides a basis for determining which metal ion is able to displace the other upon chemical interaction.

The choice of building material is a very important design consideration.

This is so because careful consideration must be taken while deciding which metal to build things with as the reactivity of metals vary.

This variation is carefully quantified by the position of metals on the activity series.

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whats valency of nitrogen in N2O3, N2O5 and NO

Answers

Answer:

Valency of nitrogen in the given compounds:

N₂O₃ = +3

N₂O₅ = +5

NO = +2

-TheUnknownScientist 72

covalent bond of N and S

Answers

Answer:

Covalent bond between identical atoms

Covalent bonds occur between identical atoms or between different atoms whose difference in electronegativity is insufficient to allow transfer of electrons to form ions. ... The two hydrogen atoms are attracted to the same pair of electrons in the covalent bond.

assuming that no heat is lost to the surroundings, what is the final temperature of the mixture?

Answers

Well this should be pretty straightforward. If energy isn’t wasted then it should be the same temperature that you started with.
Conservation of energy says that energy cannot be created or destroyed, only transferred from one store to another.

Explain why the invention of the microscope led to the discovery of cells. ​

Answers

Answer:

Because people can now see microscopic items

Explanation:

People can now see the cells because they are so small we cant see them with the enhanced microscope we can see everything that's micro

Where does the energy of a hurricane come from? (1 point)
O the Sun
O strong winds
O Earth's spin
O Earth's moon

Answers

Answer:

strong winds come from the energy of a hurricane

The energy of a hurricane come from strong wind. The Taino Native American term hurricane, which translates to "bad spirit of the wind," is where the word hurricane originates.

What is hurricane ?

A tropical storm that has sustained winds of 74 mph or greater is referred regarded as a hurricane. A storm's eye typically measures 20 to 30 miles in width and can reach distances of 400 miles. Storms can be dangerous because of their torrential downpours, strong gusts, and storm surges.

When warm, humid air begins to rise over water, hurricanes emerge. Cooler air replaces the rising air. Large clouds and thunderstorms continue to grow as a result of this process. Thanks to the earth's Coriolis Effect, these thunderstorms are still expanding and starting to rotate.

Thus, option B is correct.

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What is an activation energy

Answers

Answer:

Defination of Activation energy :-

In chemistry and physics, activation energy is the minimum amount of energy that must be provided for compounds to result in a chemical reaction. The activation energy of a reaction is measured in joules per mole, kilojoules per mole or kilocalories per mole.

Meaning of Activation energy :-

The minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.

Explanation:

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plesse hurry aand help with QQQQQ

Answers

Answer: the answer should be A the first one

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mmmmmmmmmmmmmtyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

Answers

Answer:

Yes.

Explanation:

Answer:

=0=0==00=0=0=

Explanation:

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What is the total number of neutrons in an atom of O-18? a) 18 b) 16 c) 10 d) 8

Answers

Answer:

There are 10 neutrons

Explanation:

Because the atomic number is 8 and the isotope number is 18 (which is the collective protons and neutrons), we can do

18-8=10

Answer:

10

Explanation:

8 proton because it is oxygen

10 neutron because 18-8

What fraction of the original atoms of the radioactive sample will remain after the given number of half-lives has passed?

Answers

Answer:

1/8

Explanation:

[tex] \frac{1}{ {2}^{3} } = \frac{1}{8} [/tex]

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A GIRL WAIKS 10M NORTH,15M EAST AND THEN FINALLY 20MSOUTH FIND HER DISPLACEMENT​

Answers

Answer:

see this

Explanation:

The temperature of a gas is increased. Which statement best explains the effect that this has on the motion of gas
particles?

Answers

Answer:

The average kinetic energy increases, and the particles collide more frequently.

Explanation:

Ethanoic acid is a weak acid because

Is a carboxylic acid
Does not irritate the skin
Is not completely ionized in water
Produces one hydrogen ion per molecule

Answers

Answer:

is not completely ionized in water

The ethanoic acid (acetic acid) is considered as a weak acid because it does not releases all of its hydrogen in water, rather it dissociates partially and establishes an equilibrium with its conjugate base.

What is considered a pure substance?

Answers

Answer:

A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen. A pure substance does not have to be of a single element or compound.

Explanation:

Compound: A substance that contains more than one element

pure substance: is made up of one substance made up of only one type of molecule

A student draws a model of one of the sun's layers. The student draws arrows to represent hot gas moving away from the center of the sun and other arrows to represent cool gas moving toward the center of the sun. Which layer does the model show?

Radiation Zone
Convection Zone
Chromosphere
Inner Core

Answers

Answer:

The convection zone :)

What makes inertia important in that activity?

Answers

All objects resist changes in their state of motion. All objects have this tendency - they have inertia. ... The more inertia that an object has, the more mass that it has. A more massive object has a greater tendency to resist changes in its state of motion.


(Sorry if this didn’t help)

what are the statement of ethanol

Answers

Answer:

Density 0.78945 g/cm3 (at 20 °C)

Melting point −114.14 ± 0.03 °C (−173.45 ± 0.05 °F; 159.01 ± 0.03 K)

Boiling point 78.23 ± 0.09 °C (172.81 ± 0.16 °F; 351.38 ± 0.09 K)

Solubility in water Miscible

Explanation:

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Answers

Answer:

Lithium has 1 valence electron, Sulfur has 6

A is oxidized, B is reduced

A is reducing agent, B is oxidizing agent

Explanation:

when an atom loses electrons, it is oxidized

when an atom gains electrons, it is reduced (almost think of when you add a negative number to a positive number, the positive number gets smaller or is reduced)

What is acid rainnnnnn

Answers

Answer:

ACID RAIN

Explanation:

duh

Acid rain is a rain that is kind of effective to nature, if your place rains acid rain a lot, then you might see the roof of the buildings are color changing.

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A chemist measured the temperature of a liquid to be 26 ∘C, then she heated the liquid to 83 ∘C. By how many Kelvins did the temperature change.

Answers

Answer: 57.C

Explanation: simple subtraction

could you help answer these two question

Answers

Answer:

number 29 is D

Explanation: When the moon orbits the earth some of the light reflects off the moon, making it visible on the Earth.

I dont know how to answer 28 fully, is there a picture?

What’s solubility need it for science

Answers

Answer:

the ability of a compound to dissolve

Explanation:

salt dissolves in water so it would be soluble.

oil does not dissolve in water so it is not soluble

rays with short wavelengths that are the least penetrating, produce chemical effects, and kill germs are

Answers

Answer:ultraviolet rays

Explanation:

a student is given a mixture of sand and salt. describe a method the student could use to separate the mixture.

Answers

Salt and sand can be separated by dissolving the salt in water, filtering the mixture, and then evaporating the water to recover the salt.

There is a golden role of solubility, polar solute dissolve in polar solvent and non polar solute dissolve in non polar solvent. Therefore, Salt and sand can be separated by dissolving the salt in water, filtering the mixture, and then evaporating the water to recover the salt.

What is solution?

Solutions are a homogeneous mixture of two or more substances. A solution is a homogeneous mixture of solvent and solute molecules. Solvent is a substance that is in large amount in solution.

Solute is the substance which is in small amount in a solution. Salt and sand can be separated by dissolving the salt in water, filtering the mixture, and then evaporating the water to recover the salt.

Therefore, Salt and sand can be separated by dissolving the salt in water, filtering the mixture, and then evaporating the water to recover the salt.

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What is the most common injury caused by working with machines unsafely?

Answers

Answer:

The most common injury caused by working with machinery are cuts and burns.

Explanation:

Cuts and burns are the  most common injury caused by working with machines unsafely.

What is injury?

Any physiological harm to living tissue brought on by acute physical stress is referred to as an injury. An injury can be brought on by a blunt trauma, a piercing trauma, burning, exposure to chemicals, asphyxiation, or overexertion, and it can also happen accidentally. Any area of the body can become injured, and each injury has a unique set of symptoms.

Major injuries are normally treated by a medical practitioner, and the type of treatment depends considerably on the injury. The most frequent reason for accidental human injury or injury-related death is traffic crashes. Chronic conditions are different from injuries. Cuts and burns are the  most common injury caused by working with machines unsafely.

Therefore,  Cuts and burns are the  most common injury caused by working with machines unsafely.

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the properties of a substance that can be observed without altering its identify physical property. true false ?​

Answers

Answer:

True

Explanation:

A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points.

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