Which of the following statements are true about energy and bonds?
Check all that apply.
A. Energy is necessary for bond formation.
B. Breaking bonds does not absorb or release energy.
C. Breaking bonds takes energy.
D. When bonds are formed, energy is released.

Answer:

unbalanced

Explanation:

got in right on study islands

Answer:

it shrinks gradually, then suddenly gets a lot smaller.

Explanation:

During the initial cooling the balloon begins to shrink. At the point where the 2nd gas turns to liquid the volume reduces drastically because liquids take up much less volume than their gas counterparts.

Answer:

do you go to hphs?

Explanation:

cuz i need this for chemistry:/

Answer: 32

Explanation: but you can find them on goggle

Answer:

What are the answer choices

Explanation:

Answer:

The answer choices are

Explanation:

A. The ocean plants cause more weathering.

B. More algae grows and competes for resources.

C. the slow water causes more erosion.

D. Less sediment is deposited in the soil.

But the answer is (D. Less sediment is deposited in the soil.)

The type of energy is given as under :

The sun transfers energy to the earth in the form of electromagnetic waves and the warm up the earth's upper air.

Some of the radiation that enters the earth get absorbed by the land surface. The sun is ths responcible for the energy distribution.

The visible light is part of wavelength that carries colors the human eyes can see. The infrared is the range that transfers the heat from the sun.

Find out more information about the Earth.

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Answer: the water bottle

Explanation:

yuh

One of the basic states of matter, described as having a distinct shape, size, and organized structure, is solid. The constituent particles of solids have fixed positions and oscillate around their mean positions. Solids also have distinct borders. Here the solid is a water bottle.

The atoms and molecules in a solid are so tightly bound together that they vibrate in situ rather than moving. Liquids have a fixed volume but can flow to change their shape. Atoms and molecules are only weakly bound together in liquids.

In the water bottle, a solid is a water bottle and water is a liquid. Solids' molecules continue to be tightly packed. Solids' molecules don't move about freely in all directions; instead, they stay stationary.

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Answer:

D. Electrodes

Explanation:

A redox reaction is defined as the reaction in which both oxidation and reduction reactions take place and electrons are transferred from oxidized substance to the substance that is being reduced.

An electrochemical cell is consist of electrodes (anode and cathode), electrolyte solution, salt bridge, and conducing wire. An electrochemical cell undergoes redox reaction that produces an electric current due to the movement of ions through electrodes. Electrodes are the source of ions, as anode electrode undergoes oxidation reaction and releases electrons or ions and cathode, gains electrons through reduction reaction.

Hence, the correct answer is "D. Electrodes".

Answer: Either give off or gain electrons to make a total of 8

Answer:

Freshwater is such a limited resource because there is such a little amount of freshwater found on Earth. About 77% of fresh water on Earth is frozen in glaciers and polar ice caps. Because of this, there is very little fresh water available for humans to use.

Explanation: Hope this helps.

Freshwater is a scarce resource, making up just around 3% of the total amount of water on Earth. Although freshwater is regarded as a renewable resource, certain areas utilize more freshwater than can be replaced by natural processes.

There is a very small amount of fresh water on Earth, making it a scarce resource. The polar ice caps and glaciers contain around 77% of the fresh water on Earth. This results in a relatively limited supply of fresh water for human use.

Since freshwater only accounts for around 3% of the total amount of water on Earth, it is a limited resource.

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Answer: The proportions of components can vary.

Explanation:

A mixture is a combination that has to do with two or more substances. Some characteristics or properties of mixtures are that the substances that are added together retain their properties.

Also, the proportion of the components can vary and the components can be separated.

Therefore, the answer to the question will be option 3 "The proportions of components can vary".

Answer:

The nucleus

Explanation:

Answer:

of FeO into moles.ififdjdjjfjdjfjfjfjfjfjfjfjfjfjfjf

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 0.167moles are there in 12.0 g of FeO into moles.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. The stoichiometry represents the number of moles.

Mathematically,

number of moles of FeO =given mass of FeO ÷ molar mass of FeO

Molar mass of FeO  =71.8444 g/mol

mass of FeO = 12.0 g

Substituting all the given values in the above equation, we get

number of moles of FeO  = 12.0  ÷71.84

number of moles of FeO =0.167moles

Therefore, 0.167moles are there in 12.0 g of FeO into moles.

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Answer: Sodium/Na

Explanation: Molar mass is basically a measure of how heavy 6.02 x 10^23 atoms of a substance is, measured in grams.

So, if Sodium has the lowest molar mass then that means it’s molecules are very light. I’ll give a comparison: if you have 10 kilograms of bricks and 10 kilograms of feathers, will you have more feathers or bricks? Feathers, of course.

Mathematically it looks like this

50g/22.99g/mol = 2.17 mol

2.17 mol • 6.02 x 10^23 = 1.31 x 10^24 atoms

50g/58.93g/mol = 0.85 mol

You can see that as molar mass increases that the number of moles, and consequently, atoms, decreases.

Hope this helped

Answer:

Iron metal is more reactive than copper.

Explanation:

Iron metal is more reactive than copper. ... Cu is less reactive than iron, therefore, cannot replace iron from iron sulphate (FeSO4). we have already seen that iron is more reactive than copper. So that means that in this reaction, copper is less reactive than iron. That means copper cannot displace iron. It cannot kick out iron from a sulfate.

Answer:

[He]2s^2: Be

[Ne]3s^23p^5: Cl (thats an L, not an i)

[Xe]6s^1: Cs

[Ar]4s^23d^9: Cu

SO IN ORDER IF YOU DONT WANNA READ ALL THAT

Be

CL

Cs

Cu

Explanation: Edge :)

Answer:1 Be 2 CL 3 Cs 4 Cu

Explanation:

Answer:

because they are actually moving, or because they reflect our motion through space.

Explanation:

Stars making a circular motion across the sky is evidence of the earth's rotation.

This is because when the earth rotates it appears to us like the stars are moving.

Explanation:

This medication is used as a moisturizer to treat or prevent dry, rough, scaly, itchy skin and minor skin irritations (e.g., diaper rash, skin burns from radiation therapy). Emollients are substances that soften and moisturize the skin and decrease itching and flaking.

This answers may help you

Answer:

For example, the compound FeSO4 is called iron(II) sulfate, because it contains Fe2+.

Explanation:

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Answer:

Explanation:

Tough question.

The answer is very dependent on the temperature of the water. At 0o C, less than 5 grams is soluble in water.

The curve increases as the temperature increases. At 80oC about 35 grams  is soluble in water 100 mL of water.  So Ba(OH)2 is very soluble at higher temperatures.

Maybe the question can be resolved just a little better at room temperature. The solubility is still less than 5 grams / 100 mL. That makes it slightly soluble or more soluble than other things.

So to answer the question, you need to specify the temperature. I would say it is, but be prepared to defend your answer.

Answer:

If you put friction in to skating rink then obvioulsy the skaters wont be able to glide and skate.

Explanation:

friction is power that disturbes the moving power. places like skating rink and slides try to have the least amount of friction.

Answer:

185.92  L

Explanation:

Given data:

1 mole = 6.022× 10²³ molecules

1 mole = 22.4 L

Volume occupy by 5.0× 10²⁴ molecules

Solution:

1 mole = 6.022× 10²³ molecules

5.0× 10²⁴ molecules × 1 mole / 6.022× 10²³ molecules

0.83× 10¹ mol

8.3 moles

1 mole occupy 22.4 L

8.3 mol × 22.4 L / 1 mol

185.92  L

To solve such we need to know the concept behind significant figures. Addition, subtraction, multiplication and division follow the rules of significant figures. Therefore, the correct option is option A that is 7.95 g.

Significant figures of a number in positional notation are digits in the number that are reliable and necessary to indicate the quantity of something.

Rules for counting the significant figures are :

Zeroes before non zero digits are not significant

Zeros between non zero digits are significant.

Zeroes after non zero digits are not significant.

When we add two decimal numbers then, the final answer would be according to the number which have least significant number.

7.94 g + 0.0132 g = 7.95g

Since among 7.94 and 0.0132, 7.94  has the least significant numbers that is 3. So, answer should have 3 significant figures, answer will be 7.95.

Therefore, the correct option is option A that is  7.95 g.

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Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density} \\[/tex]

From the question we have

[tex]density = \frac{100}{2.4} \\ = 41.66666...[/tex]

We have the final answer as

Hope this helps you

Answer:

yes

Explanation:

yes

Answer:

Anita did not make the track team this year, and she feels really disappointed and upset. What question would most likely redirect her thinking and provide a solution?

Why did this terrible thing happen to me?

What other sports can I try this spring?

Why does everything I attempt go wrong?

Why did Karen get on the team but I didn't?

Answer - What other sports can I try this spring?

Explanation:

Failures and successes are part of our daily lives as humans. It can be very challenging for one to accept his or her failures and bring oneself above it.

when failure occur, the best way to reverse the negative impacts it brings is to move forward and decide on what next to do.  

The actions that must be taken in the processes should be quite productive enough to bring back the results one desired.

When the effects of failures prove irreversible, one would then give the mind a diversion and help his or herself think their way though the failure that was encountered.