please fill this formula​

Answer:

B

Explanation:

just answered

An artificial reef is intended to affect the ocean ecosystem by providing shelter and habitat for marine organisms causing sediment to erode into deeper waters. Hence, option C is correct.

An artificial reef is a human-made underwater structure, typically constructed with the purpose of enhancing marine biodiversity, providing habitat for marine organisms, and promoting recreational activities like fishing, diving, and snorkeling.

Artificial reefs can be created from a variety of materials, such as concrete, metal, tires, and sunken ships. The reef structure can also increase the overall biodiversity of an area by creating a new habitat for species that may not have been present before.

Additionally, the presence of an artificial reef can help to reduce pressure on natural reefs by providing an alternative location for fishing and other activities. However, artificial reefs are not typically used as a means of removing pollution from the water or preventing erosion.

Therefore, option C is correct.

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Answer:70L

Explanation:

The volume occupied by 100g of oxygen gas at STP is 70L.

1 mole of a gas at STP occupies 22.4 L volume.

The same goes for oxygen gas, [tex]O_2[/tex]. 1 mole of [tex]O_2[/tex] occupies 22.4L volume.

Now the molar mass of [tex]O_2[/tex] is = 32g

So the number of moles of [tex]O_2[/tex] in 100g is

n = 100/32

n = 3.125 moles

Volume occupied by 3.125 moles or 100g of [tex]O_2[/tex] is

V = 3.125 × 22.4 L

V = 70 L volume is occupied by 100g of oxygen gas.

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Answer:

silk are the answer of the question

Answer:

results in a Occluded front

Statement that gives description as regards energy and bonding changes between atoms such as fluorine become a molecule of fluorine, bond Energy is released as a bond is formed. Thus option 4 is correct.

The Bond Energy otherwise called as bond enthalpy  is a quantity that offers insight into the strength of a chemical bond.

The  ‘bond energy’ can also be represented as “the average value obtained from the bond dissociation enthalpies of all the chemical bonds  in a given chemical compound.

The bond energy of a chemical bond is directly proportional to the stability of that bond which implies that the greater the bond energy o between two atoms, the greater the stability of that chemical bond.

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Your question was incomplete. The probable question.

Which statement describes the energy and bonding changes as two atoms of fluorine become a molecule of fluorine?

1.Energy is absorbed as a bond is broken.

2.Energy is absorbed as a bond is formed.

3.Energy is released as a bond is broken.

4.Energy is released as a bond is formed.

Answer:

https://quizizz.com/admin/quiz/5902a3fd8d05b2100088880a/cat-1-chemistry-review

Explanation:

Answer:

atomic? hope this helps!

Explanation:

Answer:

Significant figures are a measure of precision.

Explanation:

The significant figures of a number are those that have a real meaning and, therefore, provide some information. Therefore, the set of digits that are known with certainty in a measure are called significant figures and are the digits of a number considered non-null.

Any experimental measurement is inaccurate and must be expressed with its significant figures.

In this way, significant figures express the precision of a measuring tool.

Answer:

is tht wht u want

Explanation:

1 grams Sodium is equal to 0.043497607849056 mole.

Answer:

Explanation:

you sack

Answer: American red squirrel

Explanation:

The American red squirrel is the smallest squirrel. The color of the fur may vary from season to season. The color of the squirrel can also vary depending of the environment in which it lives. In summer the black stripe appears on the sides over the white fur. It has a backbone and like other mammals nurses the offsprings. It has a bushy tail. It is a native of North America. Red fur appear on the back and white on the belly. Strong claws, strong muscles, and compact body are other key features of the squirrel.

Answer:

The reaction rate is defined as the amount of substance that is transformed into a given reaction per unit volume and time.

Answer:

4

Explanation:

total electrons = 6

electronic configuration = 1s^2, 2s^2, 2p^6

so in s orbital there are 4 electrons.

Hope it helps you (｡◕‿◕｡)

Answer:

[tex]n_{KClO_3}=0.0353molKClO_3[/tex]

Explanation:

Hello!

In this case, according to the experiment, we first realize that the pressure of oxygen is:

[tex]p_{O_2}=1.00atm-26.0/760 atm=0.966atm[/tex]

Next, we compute the moles based off the ideal gas law:

[tex]PV=nRT\\\\n=\frac{PV}{RT}=\frac{0.966atm*1.35L}{0.08206\frac{atm*L}{mol*K}*300K}=0.0530molO_2[/tex]

Thus, since there is 3:2 mole ratio between oxygen and potassium chlorate, we can compute the consumed moles of the latter as shown below:

[tex]n_{KClO_3}=0.0530molO_2*\frac{2molKClO_3}{3molO_2} \\\\n_{KClO_3}=0.0353molKClO_3[/tex]

Best regards!

Answer:

Explanation:

The melting point of a substance is the temperature at which its melt. The state of a substance is dependent on it's melting temperature. Generally, melting point above 25 °C is a solid.

This means phenol is a solid

Duodecane has melting point below 25 °C hence it is either a liquid or gas. However its boiling point of 216 °C means it would require higher temperature to boil it. Since 25 °C is less than 216 °C it means that it would remain in the liquid state.

Methane has melting point below 25 °C hence it is either a liquid or gas. However its boiling point of -164 °C means it boils easily even at very low temperatures. Since 25 °C is greater than -164 °C it means that it would exist in the gaseous state

Answer:

5) donating H to a solution when they have been depleted and accepting H when they are in excess.

Explanation:

A buffer solution is a solution that undergoes a negligible change in pH in addition of moderate quantities of acid or alkali. In other words, a buffer solution is one that resists a change in pH on addition or dilution of small amounts of acids or alkalis.

So, from the given question:

Buffers are substances that help resist shifts in pH by donating H to a solution when they have been depleted and accepting H when they are in excess.

Answer: see below

Explanation: for 75 ml, take 45*75 mg of BSA and make up to 75 mL with distilled water.

não se esqueça de mim não sei

3

2

1

4

6

5

not a 100% sure but i think this is it.

Answer:

Prueba con tus argumentos quienes sufren mas con la violencia?

Answer:

Sure! The complete balanced chemical equation for the reaction you provided is: `2A + BC3 -> AC2 + 3B`.

Answer:

ikr

Explanation:

‍♂️ it's really sad

Answer:

sometimes the female doesn't want to be hurt, or it could be from the last relationship she was in. maybe just maybe the female feels like you are using her for her body or just to use her. Sometimes females want to stop the heartache before it begins. Tbh we all have different reasons for it.

Explanation:

Answer:

A

Explanation:

In order for plants to entice pollinators, they must first offer their favorite foods: nectar and protein. Since most pollinators fly, the colors of a flower must attract them; therefore, the brighter the flower, the more likely it will be visited. ... For instance, bees are attracted to bright blue and violet colors.

hope this helps you out...

Answer:

To determine the correct subscripts in a chemical formula, you have to solve how many atoms you need to balance the charge.

For example if I had the compound Calcium Fluoride I would look at the periodic table and see that Calcium's ionic formula is

Ca2+

. How do I know this? Well all elements want to have 8 valance electrons so they can be stable(happy). Seeing that Calcium has 2 valance electrons it is going to give away 2 electrons because that is easier than gaining 6 to be happy. Since Calcium has given away 2 electrons it has two more protons than electrons. We know that Protons have a Positive charge, Electrons have Negative charge, and the number of electrons is equal to the atomic number of an element in its pure non-ionic state. (Meaning it doesn't have a positive or negative charge; it is balanced.)

So if calcium gave away two electrons, it will have two more protons than an electron giving it a (2+) charge. The same process can be applied to Fluoride. Since fluoride is one to the left of the noble gases(group 18 or 8A) on the periodic table we know that it has 7 valance electrons because it is in group 7A or 17.

Knowing that we have 7 electrons the fluoride atom will gain an extra electron. Since the fluoride atom gained an extra electron it will have one more negative charge than a positive making it a ^(−)ion.

So you know that Calcium has a 2+ charge and that fluoride has a 1- charge, you then need these ions to balance out. So you need two fluorine atoms with a 1- ions to balance out the 2+ ion of calcium. Your final answer would be

CaF2

because you need two fluorine atoms to balance out the 2+ charge of the calcium.

Final Tip: Determine the charges then inverse the charges, remove the positive and negative superscipts, and write the charge numbers as a sub script. Ie. Calcium Fluoride

Ca2+ and F−

inversing and removing the charge signs would give you

Answer:

a

Explanation:

Answer:

........................

Answer: direction

Explanation:

Answer:

d is the right one I think