PLSS helppp
i know how to report btw

Answer:

54 g

Explanation:

STP means 22.4L/mol

27.5/22.4=1.23(mol)

1.23 mol of C3H8=1.23*44= 54 g

Answer:

If you're just looking at the Lewis Structure from the perspective of the octet rule, it does appear that the structure is correct. Dinitrogen always has a lone pair of electrons which could conceivably be used for dative bonding as you suggest. So from that perspective there appears to be nothing wrong at all - other than that it doesn't exist in nature in this way.

Explanation:

Answer:

Hunds Rule

Explanation:

The principle states that electrons in the same sublevel (p, d, or f) are placed in individual orbitals, before they are paired up, to increase atomic stability is Aufbau principle, therefore option (a) is correct.

What is Aufbau principle ?

Aufbau principle states that electrons are filled into atomic orbitals in the increasing order of orbital energy level.

According to the Aufbau principle, the available atomic orbitals with the lowest energy levels are occupied before those with higher energy levels.

The rule/principle states that electrons in the same sublevel (p, d, or f) are placed in individual orbitals, before they are paired up, to increase atomic stability is Aufbau principle, therefore option (a) is correct.

Learn more about Aufbau principle, here:

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Answer:

A monoprotic acid has only one equivalence point in a titration curve while a triprotic acid has three equivalence points.

Explanation:

Monoprotic acids, HA, are acids that are able to donate one proton per molecule during the process of ionization or dissociation as shown below:

HA ----> H⁺ + A⁻

A triprotic acid is a polyproprotic acid, that is acids that can donate more than one proton per molecule during ionization. a triprotic acid can donate three protons per molecule during the process of ionization. The dissociation of a triprotic acid is shown below;

H₃A -----> H₂A⁻ + H⁺

H₂A⁻ ----> HA²⁻ + H⁺

HA²⁻ -----> A³⁻ + H⁺

The value Ka, is known as the acid dissociation constant. It is found by looking at the equilibrium constant for the dissociation of the acid. The higher the Ka, the more the acid dissociates

A titration curve is the plot of the pH of the analyte solution versus the volume of the titrant added as the titration progresses.

In a titration curve in which base is added to acid, the pH rises slowly until the equivalent point at which point the pH remains constant before it begins to rise again on the addition of more base.

In a titration curve of a monoprotic acid, there is only one region in which the equivalence point is obtained corresponding to the point of acid of dissociation of all its protons.

In the titration curve of a triproprotic acid, three equivalent points are obtained corresponding to the point of dissociation of each of three protons of the triprotic acid.

The titration curves are shown below

Answer:

A food web is made up of all the food chains in a single ecosystem. Each living thing in an ecosystem belongs to many food chains. A food chain is a path that energy takes through a certain ecosystem. Trophic Levels. Organisms in food webs are grouped into categories called trophic levels.

Explanation:

I HOPE THIS HEPLS HAVE A WONDERFUL DAY!:)

Answer:

you didnt say if it was an animal or people food web so imma just try my best to explane tis is an animal food web. So it really is just showing was the animals eat and if they eat other animal basicly.

Explanation:

Answer: I think they get will paralysed and some of the impulses may not be able to get through.

Answer:

a. more than the earth pull on the moon sorry if false

Answer: D

Explanation:

Answer: 6.02214179×1023 atoms

Explanation: I think so

Answer:

Endangered wildlife means that something is at risk of extinction.

Explanation:

Hope I helped

Answer:

The gas pressure inside the flask is higher than outside the flask ornthe atmospheric pressure.

Explanation:

Given a U-tube manometer with water in between each arm of U-tube. One end is open to the atmosphere while one end is sealed to a flask filled with a gas. The water in the open end of the tube is experiencing a pressure equal to the atmospheric pressure whereas the water at the end sealed of to the flask is experiencing pressure due to the gas in the flask.

If the water level in both arms of the tube are equal, then the pressure due to the gas is equal to atmospheric pressure.

If the water level in the arm sealed to the gas is higher than that of the open end, The gas pressure is less than the atmospheric pressure.

If the water level in the arm sealed to the flask is lower than the open end, the pressure due to the gas is higher than atmospheric pressure.

From the question, when the water level is higher outside the flask than inside, then the gas pressure inside the flask is higher than the atmospheric pressure.

ITS CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

Answer:

Please answer my question

Answer:

I literally have no idea

Answer:

Proteins have different functions within living beings: Cellular transport. Structure of hair, muscle, nails, cell components and cell membranes. Biological catalysts or enzymes.

Explanation:

I hope this answer has helped you

Answer:

Answer:

B. metamorphic

Explanation:

Rocks formed under high heat and pressure is essentially the definition of metamorphic rock :)

Answer:

Position 1 because it is the highest from the ground.

Hope this helps!

Answer:

Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism. Food chains intertwine locally into a food web because most organisms consume more than one type of animal or plant. ... In a predator chain, a plant-eating animal is eaten by a flesh-eating animal.

Explanation:

Answer: Xylem is the tissue responsible for supporting the plant as well as for the storage and long-distance transport of water and nutrients, including the transfer of water-soluble growth factors from the organs of synthesis to the target organs.

Explanation:

Answer:

Xylem is the tissue responsible for supporting the plant as well as for the storage and long-distance transport of water and nutrients, including the transfer of water-soluble growth factors from the organs of synthesis to the target organs

Explanation:

Explanation:

Covalent compounds (solid, liquid, solution) do not conduct electricity. Metal elements and carbon (graphite) are conductors of electricity but non-metal elements are insulators of electricity. Ionic bonds are the electrostatic attraction between positive and negative ions.

Hope its useful... :-)

Brainliest plz

Answer:

The particles have a medium amount of kinetic energy and slide past one another

Explanation:

If particles move at a high rate of speed its gas, and if they vibrate in place and they have a fixed volume and shape its probably a solid. So a medium amount of kinetic enery is correct.

Explanation:

0 is the odd one...............

and rest are metals and they lose electron and 0 gain electron and is non metal

Answer: False

Explanation: The plate tectonics  move due to convection currents of the mantle; the cooler upper mantle descends while the hotter lower mantles ascend. The heat that drives these convection currents emanated from the core of the earth (not the sun).

Answer:

Genotypic ratio = 1 Bb: 1 bb

Phenotypic ratio = 1 black rabbit : 1 brown rabbit

Explanation:

This question involves a gene coding for hair color in rabbits. The allele for Black hair (B) is dominant to the allele for brown hair (b).

According to this question, a black rabbit whose mother is brown haired (bb) is crossed with a brown hair rabbit. This means that the black rabbit will have a genotype 'Bb' while the brown rabbit will have a genotype 'bb'. Each parent will produce the following gametes:

Bb - B and b

bb - b and b

Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:

Bb, Bb, bb and bb

This means that the;

Genotypic ratio = 1 Bb: 1 bb

Phenotypic ratio = 1 black rabbit : 1 brown rabbit

Answer:

The rock changes into a Metamorphic rock

Explanation:

Usually, metamorphic rocks start out as some other type of rock, either igneous, sedimentary or even a metamorphic rock. The process of transformation is known as Metamorphism.

When a rock sitting on the surface of the earth is pushed down deep into the earth over time and is exposed to tremendous heat and pressure over time and does not melt, it changes into a metamorphic rock.

A metamorphic rock is formed from a combination of factors such as tremendous heat, high pressure, hot fluids rich in minerals which are all found deep down in the earth.

answer:

in heat transfer, as the fluid flows along the tube, the wall layers are heated or cooled. temp. variation occurs in the wall layers.

good luck :)

hopefully, this helps

have a great day !!

Answer:

do u take links bcs I can give u one with the answer?

The approximate initial boiling point of Magnesium chloride solution has been 102.33 degree Celsius.

The pure water has boiling point 100 degree Celsius. With the addition of the solvent, the boiling point has been increased. The change in the boiling point ([tex]\Delta T_b[/tex]) has been given as:

[tex]\Delta T_b=i.K_b.b[/tex]

Where, i has been the van't Hoff factor

[tex]K_b[/tex] has been the ebullioscopic constant

b has been the molality of the sample

The dissolution of magnesium chloride in water has been given as:

[tex]\rm MgCl_2\;(aq)\;\rightarrow\;Mg^2^+\;+\;2\;Cl^-[/tex]

The i has been the amount of molecules that has been formed by the dissociation of 1 molecule. The dissociation of Magnesium chloride has been resulted in the 1 Mg and 2 Cl. Thus, the i for Magnesium chloride has been 3.

The molality (m) of the solution has been given as:

[tex]m = \dfrac{m_s_o_l_u_t_e}{mwt}\;\times\;\dfrac{1000}{m_s_o_l_v_e_n_t}[/tex]

Where, [tex]m_s_o_l_u_t_e=285\;\text {g}\\m_s_o_l_v_e_n_t=2\;\text{kg}\\mwt=95.211\;\text{g/mol}[/tex]

Substituting the values, molality of the Magnesium chloride solution (b) can be given as:

[tex]b=\dfrac{285}{95.211}\;\times\;\dfrac{1}{2}\;\text{m}\\b=1.49\;\text{m}[/tex]

The molality of the solution has been 1.49 m.

Substituting the values for change in temperature:

[tex]\Delta T_b=3\;\times\;0.52\;\times\;1.49\;^\circ \text C\\\Delta T_b=2.33\;^\circ \text C[/tex]

The rise in boiling temperature with the addition of 285 g of Magnesium chloride has been 2.33 [tex]\rm ^\circ C[/tex]. Since, the initial temperature for pure solvent has been 100 degree Celsius.

The initial temperature of Magnesium chloride solution has been the sum of two. Thus:

[tex]\text {Initial temperature}=100^\circ \text C\;+\;2.33\;^\circ \text C\\\rm Initial\;temperature=102.33\;^\circ C[/tex]

The initial temperature of magnesium chloride solution has been 102.33 degree Celsius.

For more information about the boiling point, refer to the link:

https://brainly.com/question/2153588