PLEASE HELP RIGHT ANSWER GETS BRAINLIESS​

Answer:

d is physical

f is chemical

Answer:

Compound.

Explanation:

Salt is an ionic compound. How do I know?

When dissolved in water (water is a covalent compound), then salt will allow electricity to move through it because it is a conductor.

Other reasons:

High melting point.

High boiling point.

Strong bond.

Transfers electrons.

Made of a metal or nonmetal.

Etc.

Answer:

Option A (A radiosonde) is the right response.

Explanation:

Some other alternatives offered are not connected to the circumstance in question. So, the alternative here was the right one.

Answer:

Capable of being hammered out thin

Explanation:

, as certain metals; malleable. capable of being drawn out into wire or threads, as gold. able to undergo change of form without breaking.

Answer:

If Carbon Dioxide levels go up then so does air temperature

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\ [/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{3.75 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{3.75}{6.02} \\ = 0.6229235...[/tex]

We have the final answer as

Hope this helps you

Answer: Plants have the ability to make the right amount of glucose to be used on nights or when there is a cloudy day. It can be kept in the plants leaves and other areas.

Explanation: pls mark brainiest thankss!!

Answer:

Explanation:

In order to be able to solve this question/problem efficiently one has to understand the the concept of acidity. Using the Bronsted- Lowry definition, Acids can be defined as any substance that has the ability of donating proton/ Hydrogen ions,H^+.

REASON BEHIND THE POSITIVELY CHARGED SURFACE:

The protons that acids produces will react with the shell of the eggs which contains a calcium compound. When these protons from acid react with the shell of the egg there is productions of Calcium ion, Ca^2+ and other materials such as water.

WHY MIGHT THIS RESULT IN A CHEMICAL REACTION WITH THE FOOD COLORING WHILE NOTHING SEEMED TO HAPPEN TO THE EGG I

THE WATER SOLUTION?

Nothing happens to the water solution because water is not acidic. The positive ions (produced by the reaction of protons with the egg shell) are able to reach with negative ions.

WHAY DOES THIS TELL YOU ABOUT THE CHARGE OF THE FOOD COLORING MOLECULES?

They are negatively charged.

Answer:

The nucleus and electrons the electrons orbit around the nucleus.

Explanation:

Answer:

nucleus and electrons

Explanation:

nucleus in the middle of the atom containing protons and nuetrons and the outer region contains the electrons

Answer:

NiSO4

Explanation:

Sulphur has got 2 valence electrons that it gains and on the exchange of the valence electrons with Nickel, which provides a number of valence electrons that cancels easily with those of sulphur, the we shall have the remainder of four electrons at the the bass of the formula

Answer:

The motorcycle's speed after three seconds of acceleration is 18 [tex]\frac{m}{s}[/tex]

Explanation:

Acceleration is a vector quantity that relates changes in speed to the time it takes to occur. Its unit of measurement, in the International System is meters per second squared [tex]\frac{m}{s^{2} }[/tex].  This is expresed as:

[tex]acceleration= \frac{change in speed}{time}[/tex]

Acceleration relates changes in speed with the time in which they occur, that is, it measures how fast changes in speed are:

In this case you know:

Replacing:

[tex]6 \frac{m}{s^{2} } = \frac{speed}{3 seconds}[/tex]

Solving:

speed= [tex]6\frac{m}{s^{2} }[/tex] * 3 seconds

speed= 18 [tex]\frac{m}{s}[/tex]

The motorcycle's speed after three seconds of acceleration is 18 [tex]\frac{m}{s}[/tex]

Answer:

There is 13 atoms in total.

Explanation:

There is 2 potassiums, 4 borons and 7 oxygens.

So 2 + 4 + 7 = 13 atoms

Hope this helps!

Answer:

A) Potassium B) Boron C) Barium C) Neon

Explanation:

Answer:

Short answer 18x3=54 gram

Explanation:

When you express molecular mass (in case of molecule)/atomic mass(in case of atom) in gram it will be equivalent to one mole. For example:

12 gram Carbon atom = 1 mole of Carbon atom = N number of Carbon atom

16 gram Oxygen atom= 1 mole of Oxygen atom = N number of Oxygen atom

32 gram Oxygen molecule (O2) = 1 mole of Oxygen molecule (O2) = N number of Oxygen molecule (O2)

similarly 1 mole of water is equivalent to molecular mass of water x 3 that is 18x3=54 gram. It would constitute 3N molecules of water.

N: Avogadro's number : 6.022140857 × 10^23

Explanation:

According to the mole concept ,the mass of 3 moles of H₂O or water is 54 g.

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons .Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.

Number of moles is obtained as, mass/molar mass.Substituting number of moles as 3 and molar mass as 18 g mass=18×3=54 g.

Thus, the mass of 3 moles of H₂O is 54 g.

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Answer:

the answer is b, which is one

Answer:

14660.75 kJ.

Explanation:

We are given from the question above that the pressure inside is represented by this equation:

P = Po + C(1-(D1/D))(D1/D).

Thus, P = 100 + C (1 - 1/4) (1/4). Therefore, P  which is = 400 is;

400 = 100 + C (1 - 1/4) (1/4).

Hence, C = 1600. And the equation can be written as P = 100 + 1600 (1 - (D1/D))(D1/D).

The work done during the entire process, w = (work done during the process 1 to 2) + (work done duringbthe process 2 to 3 ).

Therefore, work done during the process 1 to 2 = P(V2 + V1) = 100( π/6 - 0).

{NB: V2 is gotten from π/6 × D^3. Where D^3 = 1. }

Hence, work done during the process 1 to 2 = 52.36 kJ.

So, the work done duringbthe process 2 to 3 ) is going to be the integration of PdV. Where P = 100 + 1600 (1 - (D1/D))(D1/D) and dV = π/2 D^2 dD. Taking the upper and the lower limit as 4 and 1 respectively.

After the integration (kindly check attached picture for the process) the work done duringbthe process 2 to 3  = 14.61 × 10^3 kJ.  

Therefore, The work done during the entire process, w = (work done during the process 1 to 2) + (work done duringbthe process 2 to 3 ).

The work done during the entire process, w = 52.36 kJ + 14.61 × 10^3 kJ.   = 14660.75 kJ.

Answer:

They are called energy levels.

Explanation:

Water is known as the universal solvent because it can dissolve almost all ionic compounds due to its polarity that is having partially charged ends.

A polar compound is having the partially charged ends, where the shared pair of electrons are attracted  towards the more electronegative atom, and thus have partial charges on both atoms.

In water, the shared pair of electrons are pulled towards the electronegative oxygen atom and thus O acquires a negative charge and H gets a positive charge. These charged ends are active to attack other reagents and forms hydrogen bonds with other electronegative atoms of ionic bond.

In this way water bonds to the ionic compounds and gets them easily dissolved.  Hence, option C i.e., have partially charged end is correct.

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Explanation:

Chemistry is the scientific discipline involved with elements and compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances.

Answer:

To give non expensive spoons the appearance and the chemical resistance of the expensive ones.

Explanation:

Companies are cheap and under strict guidelines. This is their loophole.

Electroplating is the coating of metals by the process of hydrolysis. Metallic spoons are electroplated with silver to give an expensive appearance and chemical resistance.

Electroplating has been known as the electrochemical deposition of the metal on another solid metallic substrate by the process of hydrolysis or cation reduction through electric current.

This process is used to coat metals to prevent them from getting corroded. Also, it has been used to give a decorative and expensive look to ordinary metal.

The metallic spoons are electroplated with silver metal to make them look expensive and rich. The silver moves from the anode towards the cathode where the spoon is in the presence of the current.

Therefore, the metals are electroplated by silver for an expensive and rich look.

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Answer:

Fossil B was found at a depth of 185 meters below the Earth's surface, while fossil A was found at a depth of 50 meters below the Earth's surface.

Explanation:

Because if fossil B was found at a lower depth then it would be older than fossil A

Hope this helps, have a good day :)

Answer:

Fossil B was found at a depth of 185 meters below Earth's surface, while fossil A was found at a depth of 50 meters below Earth's surface.

Explanation:

I hope this is an answer choice but this would support fossil B being older than fossil A bc the deeper the fossils are in the earth’s surface means that its older.

Answer:

The Answer is D

Explanation:

Answer:

the tops ones will be animal and plants

under cells it will be nucleus

the genes

the last three will be eye color, height, and type of fruit

Explanation:

The atomic number of an atom is also the number of proton in an atom.

The answer is B........

One way to rephrase it is to say: "All life depends on photosynthesis because plants use the sun's energy to make oxygen for animals to breathe. Also, animals rely on plants for energy when they eat the plants"