The diagram is a model of one way that materials move into a cell.


Which Sentence explains what happens in last step?

A. a vacuole carries particles into the cell
B. The cell membrane surrounds particles outside the cell.
C. Phospholipids in the cell membrane allow particles to pass through
D. Transport proteins push particles out of cell.

Answer:

75000 Hz

Explanation:

f = V / λ (f= frequency, v=velocity of wave, lambda= wavelength)

alternatively, f = c / λ (f= frequency, c= speed of light- 3.00x10^8 m/s, lambda= wavelength)

f= [3.00x10^8 m/s]/[4000 m]

=75000 Hz

Answer:

you did not show the whole page

Explanation:

Answer:

H2+NO3=HNO3

Explanation:

becuase HNO3

Answer:yup!!

Explanation:

Molar mass

= Atomic mass of Na + Atomic mass of N + Atomic mass of O3

= 23 + 14 + (16×3)

= 23 + 14 + 48

= 85 g per mole

Answer:

As you move from left to right, the nucleus gains protons. This increases the positive charge of the nucleus and its attractive force on the electrons. At the same time, electrons are added to the atoms as you move from left to right across a period.

Explanation:

Answer:

Its the thin lining around the cell the moniters what gets in and out of the cell.

Explanation:

Examples of compounds include table salt or sodium chloride , sucrose (a molecule, nitrogen gas, a sample of copper, and water.

Answer:

55.3 = 328.45k

255 = 18.15°c

447 = 173.85°c

-14 = 14k

Answer: cooling

Explanation:

Answer:

cooling

Explanation:

Answer:

Here now you can give the other person the brainly they deserve and they were right too :)

Explanation:

The line that has been the representation of the region of rarefaction in the diagram has been the line below the top line.

The diagram has been the representation of the movement of the particles under the influence of wave energy. The particles have been moving from left to right in the longitudinal order with a gain of energy.

The rarefaction has been the instance where the density of the waves has been lesser or where there has been one wavelength of the wave.

The diagram has been representing, at the line below the top arrow, there have been lesser density of the wave particles, thus, the region of rarefaction has been the instance in the lines below the top line.

For more information about the rarefaction, refer to the link:

https://brainly.com/question/1326823

Answer:

Entropy,mass and volume.... I think

Mass is the extensive property of a sample of aluminum. Therefore, option (A) is correct.

The extensive property can be described as a physical property of matter that changes with a change in the size and shape of the matter. Therefore, the extensive property of any substance varies directly with the mass.

Extensive properties are the value of the property of the system that must be equal to the sum of the values of different parts of the system. These properties depend on the amount of matter contained in the system.

Examples of Extensive properties are temperature, pressure, density, boiling point, etc. The ratio of the two extensive properties is an intensive property such as density.

The mass of a sample of aluminum is an example of extensive property as it depends on the amount of aluminum in the given sample. This property of the sample is proportional to the size of the system.

Learn more about the extensive property, here:

https://brainly.com/question/13733851

#SPJ6

Your question is incomplete, most probably the complete question was,

Which of the following is an extensive property of a sample of aluminum?

A) Mass

B) Temperature

C) Pressure

D) Density

Answer:

2.0179701e-22

Explanation:

Answer:

The plant would be insect-resistant and improve its chances of success.

Explanation:

Answer:

Electrons at the outermost energy level of an atom are called valence electrons. They determine many of the properties of an element. That's because these electrons are involved in chemical reactions with other atoms. Shared electrons bind atoms together to form chemical compounds.

Explanation:

Answer:

electrons farthest from the nucleus of the atom. they are called valence electrons

Answer:

45

Explanation:

There are 12 Carbons

There are 22 Hydrogens

There are 11 Oxygens.

I think the answer is either 0 or 45. But the wording is very sloppy. It is not really atoms that are present. There are ions.

Go with 45 but hold your nose when writing your answer.

Answer:

magnesium + water == magnesium oxide + hydrogen

The empirical formula of a substance = C₄H₅N₂O

The empirical formula is the smallest comparison of atoms of compound forming elements.  

A molecular formula is a formula that shows the number of atomic elements that make up a compound.  

(empirical formula) n = molecular formula  

((empirical formula)n=C₈H₁₀N₄O₂

divide by 2 :

(C₄H₅N₂O)₂=C₈H₁₀N₄O₂

In general, some people equate mass and weight.

Mass is one of the principal quantities, which is related to the matter , whereas weight is a force that leads to the center of the earth (Earth's gravitational force)

Steps that can be taken  to find the mass :

Answer:

Negative Ions

Explanation:

Nonmetals naturally form Negative Ions by gaining electrons to fill the valence shell

Answer:

I'm pretty sure it's A

Explanation:

Answer:

for the  a p e x  quiz:

it dissociates completely in solution.

Explanation:

a p e x

Explanation:

1 ) first u have to balance the equation but in this case it is already balanced.

2) checking for the limiting reactant:

13 mol O2 × (1mol H2O / 1mol of O2) = 13 mol of H2O

14 mol of ethanol × (1mol H2O/ 1molof ethanol) = 14 mol of H2O

the less amount of moles produced from the O2 so the limiting reactant is oxygen

3) calculating the products moles

13 mol O2 × (1mol H2O / 1mol of O2) = 13 mol

13 mol O2 × (1mol Ch3Cooh / 1mol O2) = 13 mol

note: the ratios obtained from the balanced equation

4) the excess reagent is the ethanol 1 mol will be remain

Answer:

By adding heat energy

It became a gas

Explanation:

The molecules moving about another is a clear indicator that the substance is a liquid.

In a liquid, the molecules stick together and move about one another.

Answer:

conditioned

Explanation:

The best term to describe the behavior of the cat is conditioned.

The cat has been conditioned to respond in a specific way to the pet carrier over time due to certain experiences - most likely, unpleasant ones. With repeated unpleasant experience associated with the per carrier, the cat has been conditioned to dislike/fear the pet carrier and thus, the recorded behavior.

Answer:

conditioned

Explanation:

Answer:

This substance is basic.

Explanation:

The milk of Magnesia, a type of medication which can help people with heartburn and with a pH of 10.5 is a basic solution.

Answer:

11

Explanation: