Pls help its due in a few minutes

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Answer 1

Answer:

Answer:

Theory

Explanation:

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Conductivity in a metal results from the metal atoms having(1) high electronegativity(2) high ionization energy(3) highly mobile protons in the nucleus(4) highly mobile electrons in the valence shell
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The term biodiversity means the variety of organism (true or false)

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Answer:

true

Explanation:

Explain, in terms of electronegativity difference, why the bond in a molecule of HF is more polar than the bond in a molecule of HI.

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Answer:

Explanation:

Electronegativity is defined as the ability of an element to attract electrons that link it to another element.

The covalent bond (chemical bond between atoms where electrons are shared, forming a molecule. This bond is established between non-metallic elements) between two atoms can be polar or nonpolar.

When two atoms have different electronegativities, the one with the highest electronegativity will attract the electrons towards each other, generating a separation between the positive and negative charges. In this way a polar bond is produced, the polarity of which will be as the electronegativity difference between the bonded atoms is greater.

In this case you know the following electronegativities:

H=2.1
F=4.0
I=2.5

So the electronegativity differences in the HI and HCl compounds are:

HF =4.0 - 2.1= 1.9
HI = 2.5 - 2.1= 0.4

Both compounds have element H that is part of it, only differing in F and I. Since F has greater electronegativity than I, the difference in electronegativity in compound HF will be greater. Then the HF compound will be more polar.

Final answer:

The bond in a molecule of HF is more polar than the one in HI due to a greater difference in electronegativity. Fluorine has a higher electronegativity than iodine, resulting in a more polar bond with hydrogen in HF than in HI.

Explanation:

The bond polarity is determined by the difference in electronegativity between two atoms involved in a bond. In the case of HF, the electronegativity difference between hydrogen (H) and fluorine (F) is greater than the electronegativity difference between hydrogen (H) and iodine (I). Fluorine is one of the most electronegative elements, which means it has a high tendency to attract electrons. On the other hand, iodine has a lower electronegativity. Therefore, the bond in a molecule of HF is more polar than the bond in a molecule of HI due to the greater electronegativity difference.

Learn more about Bond Polarity here:

brainly.com/question/35894739

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What would be the result if Earth's unique atmosphere did not exist?

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Then the earth would most likely not be able to support life. Our earth would be similar to mars. In that it might have supported life. It the thin atmosphere would over all be unable to sustain more complex species. The earth would also be much colder because the green house effect is what maintains our relatively warm atmosphere.

Answer:

D) Life will no longer be possible

Explanation:

Odyssey ware

Solids, liquids, and gases can be distinguished by their

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The three states of matter are solid, liquid and gas phase. The solid has a more definite shape and volume. The particles are locked into place. It cannot be further compressed due to the bond that exists between the molecules. The kinetic energy of the molecules is close to none because the molecules are so close and so compact with each other. For liquids, it has a medium shape and volume. The particles can move or slide past each other due to the small space available for movement. It cannot be compressed further due to the repulsive forces that acts between them. The kinetic energy is medium. For gases, it has no shape and volume because the particles can move freely from one other. Their collisions are rare due to the distance between them. The kinetic energy of the molecules is high because there is room for movement. It can be compressed easily.

The volume of a gas decreases from 15.7 m3 to 11.2 m3 while the pressure changes from 1.12 atm to 1.67 atm. If the initial temperature is 245 K, what is the final temperature of the gas

Answers

The final temperature of the gas is 260.01 K.

The final temperature can be calculated by using the equation as follows:-

$(P_(1)V_(1) )/(T_(1)) =(P_(2)V_(2) )/(T_(2))$ ........(1)

Here, $P_1$ and $P_2$ is the pressure of this gas before and after the changes.

$V_1$ and $V_2$ is volume of this gas before and after the changes.

$T_1$ and $T_2$ is the temperature (in degrees Kelvins) of this gas before and after the changes.

Given values:-

$P_1=1.12\ atm, P_2=1.67\ atm\n\nV_1=15.7\ m^(3) , V_2=11.2\ m^(3)\n\nT_1=245\ K.T_2=?$

Substitute all the values in the equation (1) as follows:-

$(1.12\ atm*15.7\ m^(3))/(245\ K ) =(1.67\ atm*11.2\ m^(3))/(T_2 )\nT_2=(1.67\ atm*11.2\ m^(3)*245\K)/(1.12\ atm*15.7\ m^(3) )\n=260.60\ K$

Hence, the final temperature of the gas is 260.60 K.

To know more about:-

brainly.com/question/23967621

Explanation:

The data is given as follows.

$P_(1)$ = 1.12 atm, $P_(2)$ = 1.67 atm

$V_(1) = 15.7 m^(3)$ , $V_(2) = 11.2 m^(3)$

$T_(1) = 245 K$ , $T_(2)$ = ?

Therefore, calculate the final temperature using the relation as follows.

$(P_(1)V_(1))/(T_(1))$ = $(P_(2)V_(2))/(T_(2))$

$(1.12 atm * 15.7 m^(3))/(245)$ = $(1.67 atm * 11.2 m^(3))/(T_(2))$

$T_(2) = (1.67 atm * 11.2 m^(3) * 245 K)/(1.12 atm * 15.7 m^(3))$

= $(4582.48 K)/(17.584)$

= 260.605 K

= 260.61 K (approx)

Thus, we can conclude that final temperature is 260.61 K.

What is the mass of 2.50 ×1022 molecules of NaOH (Molar mass = 40.0 g/mol)?

Answers

Two things are given to us: The "molar mass" of NaOH and the number of molecules of NaOH.

The molar mass is different from "mass"; 1 mole of NaOH is equal to 40.0g/mol.
When the question asks, what is the mass? It is referring to how many grams there are.

First, we are going to convert the molecules to atoms using Avogadro's number (=6.02 x 10^23)

(2.50 x 10^22 molecules) x (6.02 x 10^23 atoms) = 0.042 mol

Next, we are going to convert from moles to grams.

0.042 mol of NaOH x 40.0 g of NaOH/1 mole = 1.68g of NaOH.

There are 1.68 grams in 2.50 x 10^22 molecules of NaOH.

Hello!

What is the mass of 2.50 ×1022 molecules of NaOH (Molar mass = 40.0 g/mol)?

Data:

Molar Mass of NaOH = 40 g/mol

Solving: According to the Law Avogradro, we have in 1 mole of a substance, 6.02x10²³ atoms/mol or molecules

1 mol -------------------- 6.02*10²³ molecules

y mol -------------------- 2.50*10²² molecules

$(1)/(y) = (6.02*10^(23))/(0.250*10^(23))$