underline and identify the parts of the text on this page that use examples of how the flow of the matter through a system is driven by energy and can do the work.​

Option B, Metals have good conductivity.

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Answer:

The elements of Group VIIA (new Group 17 – fluorine, chlorine, bromine, iodine, and astatine) are called the halogens (tan column). The term “halogen” means “salt-former” because these elements will readily react with alkali metal and alkaline earth metals to form halide salts

Answer:

You can model a substance doing a Lewis structure

And also you can model it doing a bond-line structure.

Answer:

it's a property of a cell, tissue and organisms that allows to maintain and regulate the stability and constancy to function properly

Answer:The answer is in the attached file below

Explanation:

Answer:

Modern science is typically divided into three major branches that consist of the natural sciences (biology, chemistry, physics, astronomy and Earth science), which study nature in the broadest sense; the social sciences (e.g. psychology, sociology, economics, history) which study people and societies; and the formal ...

Explanation:

The four major branches of science are, Mathematics and logic, biological science, physical science and social science. The first branch is mathematics & logic.

Explanation:

Answer:

40.0 L

Explanation:

The formula to find the new pressure: [tex]\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}[/tex]

P₁ = 15.0 L

V₁ = 2 atm

T₁ = 300 K (Convert Celsius to Kelvin by adding 273)

P₂ = 1

V₂ = ?

T₂ = 400 K

[tex]\frac{(2)(15)}{300} = \frac{P_2(1)}{400}[/tex]

[tex]\frac{30}{300} = \frac{P_2}{400}[/tex]

[tex]\frac{1}{10} = \frac{P_2}{400}[/tex]

Multiply both sides by 400 to isolate the P₂

[tex]\frac{400}{10} = P_2[/tex]

[tex]P_2 = 40[/tex]

Answer:

12 gal

Explanation:

474.2 mix 1 gal/39.5 mi = 12 gal

Answer:

See explanation below for answers

Explanation:

0.00305

0.00310

0.00300

0.00305

0.00305

When there is a decimal point, you must skip the zeros until you reach a number. Once you reach that number, you move 2 more places to the right of that number in order to have 3 significant figures. Hope this helps!

An ionic bond is formed between sodium and chlorine in sodium chloride. The correct flow chart is shown below.

The question is incomplete, the complete question is;

Complete the flow chart related to the ionic bond in sodium chloride-Atomic number,Electronic configuration of atoms,Electronic configuration of ion,Symbol of sodium ion .please help me to find the answer

The flow chart related to the ionic bond in sodium chloride is as follows;

Sodium is in group 1 of the periodic table. It contains 11 electrons as shown by its electronic configuration. It forms sodium ion by loss of one electron. Group 1 elements form an univalent positive ion.

Chlorine is in group 17 of the periodic table. It has 17 electrons. It forms chloride ion by gaining one electron leading to the formation of sodium chloride.

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Answer:

According to significant figures we have leading zeros, trapped zeros and zeros at the beginning. So that number is a leading zeros and its has 7 SGF.

Answer:

0.001

Explanation:

Explanation:

what do you have written I can't understand one word right a properly

Answer:

answer

Explanation:

Area : Square Meters,

Volume : Cubic Meters,

Density : Kilograms per Meter Cube,

Velocity : Meters per Second Squared,

Force : Newtons (Mass multiplied by Acceleration or Mass multiplied by Displacement divided by Time squared)…..

Answer:

no all protons in an element doesn't contain an identical number of neutrons . number of electrons and number of protons contain identical number but the number of neutrons may vary. for eg: protons and neutrons of hydrogen is 1 and 0 respectively whereas protons and neutrons of helium is 2 and 2 .

Answer:

graduated cylinder

Answer :

0.9999432 g/cm^3

The density of water in g/ml up to 4 significant figures at 6°C is 0.9999432 g/cm³.

Significant figures are used for establishment  of a number which is presented in the form of digits. These digits give a meaningful representation  to the numbers.

The significant figures are the significant digits which convey the meaning according to the accuracy. These provide precision to the numbers and hence are called as significant numbers.There are rules for counting significant figures which are as follows:

1)All non-zero digits are significant .

2)All zeroes which occur between non-zero digits are significant.

3)All zeroes to the left and right of  a non-zero digit are not significant.

4) All zeroes on right  of decimal are significant if a non-zero number follows them.

5)All zeroes on right side of non-zero digit are significant

Learn more about significant figures,here:

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Answer:

Bromine is a dark reddish-brown fuming liquid with a pungent odor. Denser than water and soluble in water. Hence sinks in water.

Answer:

B. Knowing the color and brightness of a star

Explanation:

Answer:

The opposite action of boiling (liquid to gas, evaporation) is condensing

Sublimation is the opposite of deposition

Top antonyms for melting (opposite of melting) are frozen, advent and arrival.

Explanation:

on edg

Answer:

poop

Explanation:

Answer:

All right. So let's calculate the density of a glass marble. Remember that the formula for density is mass over volume. So if I know that the masses 18.5 g. And I know that the um volume is 6.45 cubic centimeters. I can go ahead and answer this to three significant figures. So it's going to be 2.87 grams per cubic centimeter. Okay, that's our density. Now, density is an intensive process. Okay. We're an intensive property. I really should say. It doesn't depend on how much you have. Mhm. If I have one marble, its density is going to be 2.87 g per cubic centimeter. If I have two marbles, the density will be the same because I'll double the mass and I'll also double the volume. So when I divide them I'll get the same number. Okay, that's what makes it an intensive property. No matter how many marbles I have, they'll have the same density. Mass though is not an intensive property. So if I have six marbles and I want to know what the massive six marbles is. Well, I know the mass of each marble is 18.5 g. So the mass of six marbles Is going to be 100 11 g. Because mass is an extensive property. It depends on how much you have. If I change the number of marbles, I'm going to change the mass. That's an extensive property. All right. So we've calculated the density. We've calculated the mass and then what happens to the density of one marble compared to six marbles as we mentioned before. Since densities and intensive property, the densities will be the same, no matter how may.

Explanation:

Answer:

Gas

Explanation:

The atoms, ions, or molecules that make up the gas are further apart and move freely at high speeds and is can easily be compressible.

Answer:

Gas

Explanation:

A gas is a substance or matter in a state in which it will expand freely to fill the whole of a container' having no shape like a solid and no fixed volume like a liquid.

Answer:

A. How Acidic the solution is

Explanation: pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.

Answer:

A

Explanation:

The pH of a solution indicates it's acidity or alkalinity. The pH scale is an inverse logarithm that ranges from 0 to 14. Anything below 7.0 (ranging from 0.0 to 6.9) is acidic and anything above 7.0 ( from 7.1 to 14. 0) is basic or alkaline.

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Answer:

45

Explanation:

yes i need help please

Answer:

chemical changes

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