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Answer:

B. Dipole-dipole

Explanation:

Dipole-dipole is an intermolecular force between polar molecules, where the positive end of one molecule is attracted to the negative end of the second molecule. Polar molecules form dipoles because they contain both electron-rich and electron-deficient regions, thus containing a partial positive pole and a partial negative pole within the same molecule. Examples of molecules that form dipole-dipole interactions include acetone and formaldehyde.

The intermolecular force acting in CH3CH3 is the dispersion forces.

The nature of intermolecular forces between molecules depends on the polarity of the molecules. Nonpolar polar molecules only have weak dispersion forces acting between their molecules.

The molecule CH3CH3 is a nonpolar molecule. Since it is nonpolar, the only intermolecular force acting between its molecules is the weak dispersion forces.

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Answer: The answer is C! Convection.

Explanation:

Apex!! Convection is thermal energy through water, and vapor is still a form of water.

Answer:

c. convection

Explanation:

AP-EX

Answer:

The correct answer is option A

Explanation:

The extreme temperatures lead to the unfolding of a polypeptide chain resulting in a change in composition and generally a loss of function. If the protein working as an enzyme denatures, it will make that protein to lose its enzymatic activity.

Answer:

Denatures

Explanation:proteins are very sensitive to temperature change

Answer:

H2O is a covalent compound because of the oxygen and hydrogen, and because they share electrons to sustain stability. Hope this helps :)

Answer:

its 90

Explanation:

because you add the mass together

The  things like magic, astrology and psychic predictions not considered science as it only consider on the proves given by the experiments and the theory not on the random predictions.

The science, any universe of source of knowledge that deals with the physical and chemical  world and its processes and that deals with the observations and experimentation with conclusion and results.

The magic is about the secret tricks done by magician and astrology is the observing the space and universe all above the earth and psychic deals with the human psychology.

Therefore, things like magic, astrology and psychic predictions not considered science as it only consider on the proves given by the experiments and the theory not on the random predictions.

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Answer:

newtons 2nd law is the answer

Answer:

1. 4.75

2. 5.50

Explanation:

Explanation:

Oxygen-16 and oxygen-18 differ in structure only in that oxygen-18 has two more neutrons in its nucleus than oxygen-16 has.

There are three known stable isotopes of oxygen (8O): 16O, 17O, and 18O. Radioactive isotopes ranging from 11O to 26O have also been characterized, all short-lived.

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Answer:

28

Explanation:

Velocity ratio= Radius of wheel/radius of axle

Radius of wheel= 4.125 inches

Radius of axle= 0.125 inches

Velocity ratio = 4.125/0.125 = 33

Then;

Efficiency = mechanical advantage/velocity ratio × 100

Since the efficiency of the system = 85%

85 = mechanical advantage/33 × 100

Mechanical advantage = 85 × 33/100 = 28

Answer:

Sugar is sucrose or [tex]C_{12} H_{22}O{11}[/tex]

Not sure what yo're looking for... Is it molecular? Solid? Nonsystematically named (sucrose)? C12H22O11?

Answer:

Carbon dioxide, or CO2, is a naturally occurring linear compound composed of two oxygen atoms covalently bonded to a carbon atom. The two C=O. Carbon DioxideA central carbon atom is connected to two oxygen atoms via double bonds in a linear structure.

Explanation:

Answer:

Explanation:

In a similar way charged particles such as electrons need to have work done to move them from one point to another. The amount of work per unit of charge is called is called the electric potential difference between the two points. The unit of potential difference is called the volt.

Answer:

Ionic

Explanation:

Ionic compounds generally form between elements that are metals and elements that are nonmetals. For example, the metal calcium (Ca) and the nonmetal chlorine (Cl) form the ionic compound calcium chloride (CaCl2).

Answer:

20 m/s

Explanation:

Answer:sodium

Explanation:

Sodium is the element that has the fewest valence electrons. The correct option is B.

A valence electron is an electron associated with an atom in the outer shell that can take part in the formation of a chemical bond if the surface layer is not closed.

Both atoms in a single covalent bond contribute one valence electron to form a shared pair.

Valence electrons are electrons in an atom's outermost shell, or energy level. For example, oxygen has six electron, two of which are in the 2s subshell and four of which are in the 2p subshell.

Because the highest energy 3s orbital has one electron, neutral sodium atoms have one valence electron.

Thus, the correct option is B.

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Answer:

2 and 4

Explanation:

The rest of the changes are chemical. 1 has a chemical reaction happen which makes light sticks glow. 3 is because browning the meat actually causes some new compounds to form and cause caramelization.

For 2, the oxygen is simply heating up and expanding which pops the balloon. 4 is just a phase change of water vapor to liquid water.

Answer:

I think sodium it may be wrong soŕry

Answer: sodium,

Explanation:

Answer:

oxygen

Explanation:

Putting the jar over the candle keeps oxygen from outside the jar from getting in. The reaction can only use the oxygen that is already in the jar. So, when that oxygen is used up, the reaction can't keep going. Running out of oxygen makes the flame go out.

​

The heat of the flame vaporizes the liquid wax (turns it into a hot gas), and starts to break down the hydrocarbons into molecules of hydrogen and carbon. These vaporized molecules are drawn up into the flame, where they react with oxygen from the air to create heat, light, water vapour (H2O) and carbon dioxide (CO2).

Combustion

And when you light a candle you use the candle's wax as fuel for a chemical reaction called combustion which involves reacting hydrocarbons with oxygen, breaking them down into carbon dioxide and water.

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The list of celestial bodies from smallest to largest are asteroids, moons, planets, and Stars.

A celestial body is an occurrence that naturally takes place in space. The terms object and body can be used interchangeably when referring to space and galaxies. Celestial bodies are firmly bound things with intricate shapes and structures that contain hundreds of smaller items.

The sun, moon, stars, and planets are examples of celestial bodies, sometimes known as heavenly bodies. The cosmos contains celestial objects, which are cosmic bodies that are visible in space and are positioned distant from the earth. We can only see the majority of the celestial groupings with a telescope.

They are usually seen at night and are invisible to the unaided eye. The size of certain celestial bodies is considerably greater than that of the planet. They are located outside of the atmosphere of the earth. There are millions of celestial bodies in the Kuiper belt.

Therefore, the list of celestial bodies, from smallest to largest are asteroids, moons, planets, and stars.

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Answer:

Explanation:

In order to find the volume be at 101.3 kPa we use Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the final volume

[tex]V_2 = \frac{P_1V_1}{P_2} \\ [/tex]

From the question

P1 = 112 kPa = 112000 Pa

V1 = 259 cm³

P2 = 101.3 kPa = 101300 Pa

We have

[tex]V_2 = \frac{112000 \times 259}{101300} = \frac{29008000}{101300} \\ = 286.3573543...[/tex]

We have the final answer as

Hope this helps you

Answer:

A

Explanation:

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

mass = 2.34 g

density = 4.78 g/mL

We have

[tex]volume = \frac{2.34}{4.78} \\ = 0.4895397...[/tex]

We have the final answer as

Hope this helps you

Answer: When in a magnetic field, the two electrons in a particular orbital differ very slightly in energy because of a property called electron spin. The theory of electron spin states that the two electrons in a single orbital spin in opposite directions on their axes, causing an energy difference between them

Explanation: I hope this helps!

Answer:

This is how

Explanation:

Protons and neutrons have approximately the same mass, but they are both much more massive than electrons (approximately 2,000 times as massive as an electron). The positive charge on a proton is equal in magnitude to the negative charge on an electron.

Answer: They are all subatomic particles that make up an atom.

Answer:

A

Explanation:

The skin, mucous membranes, and endothelia throughout the body serve as physical barriers that prevent microbes from reaching potential sites of infection. Tight cell junctions in these tissues prevent microbes from passing through.

Hope this helps:)

answer:

d) algae will grow, causing algae blooms

explanation:

changes in the environment create algae blooms. (ie. excessive use of fertilizer)

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Extra fertilizer runs off the farms, into the rivers, and out into the oceans. Algae will grow, causing algae blooms. Therefore, the correct option is option D.

Any substance of either synthetic or natural origin applied to soil or plant tissues to provide plant nutrients is referred to as a fertilizer or fertiliser. It's possible to distinguish fertilizers from liming agents and other non-nutrient soil additives. There are numerous natural and man-made sources of fertilizer.

With the exception of the sporadic inclusion of supplements such rock flour for micronutrients, fertilization for the majority of modern agricultural techniques concentrates on the three basic macronutrients of nitrogen (N), phosphorous (P), plus potassium (K). Farmers recently have started to use a lot of fertilizer on farms. Extra fertilizer runs off the farms, into the rivers, and out into the oceans. Algae will grow, causing algae blooms.

Therefore, the correct option is option D.

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