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Answer:

Extensive properties, such as mass and volume, depend on the amount of matter being measured. Intensive properties, such as density and color, do not depend on the amount of the substance present. Physical properties can be measured without changing a substance's chemical identity.

Explanation:

The correct match of each term with its definition is as follows:

The sun is a star that the Earth revolves around and from which it receives light and warmth. The parts in the sun are as follows:

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Answer:

Chromosphere = C) Layer of the sun that is known for its red color and can only be seen during eclipses.

Convective zone = B) Layer of the sun where energy is transferred by convection.

Core = A) The central and hottest section of the sun.

Radiative zon = D) Layer of the sun where energy is transferred by thermal conduction.

Explanation:

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Answer:

Carbon Monoxide

Explanation:

Everything you listen matches everything of Carbon Monoxide

Answer:

2?

Explanation:

Well the rocks can be thrown around or just start breaking down. Sorry if I'm not correct

Answer:

A

Explanation:

Wind and rain interacted with the rock, breaking it into small pieces.

Answer:

Light and heat

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Answer:

Light and Heat

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Explanation:

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Answer:

24 moles of oxygen are required.

Explanation:

Given data:

Number of moles of CuFeS = 12 mol

Number of moles of O₂ react = ?

Solution:

Chemical equation:

2CuFeS + 4O₂       →       Cu₂S + 3SO₂ + 2FeO

now we will compare the moles of O₂ and CuFeS.

                         CuFeS       :        O₂

                              2            :         4

                             12            :         4/2×12 = 24 mol

Answer:

1569.5g

Explanation:

Given parameters:

Number of molecules   = 2.56 x 10²⁵

Unknown:

Mass of HCl  = ?

Solution:

To solve this problem, let us find the number of moles first;

      Number of moles  = [tex]\frac{number of particles}{2.56 x 10^{25} }[/tex]  

 So,

    Number of moles  = [tex]\frac{2.56 x 10^{25} }{6.02 x 10^{23} }[/tex]   = 0.43 x 10²  = 43mol

Now;

 Mass of HCl  = number  of moles x molar mass

           Molar mass of HCl   = 1 + 35.5 = 36.5g/mol

   Mass of HCl  = 43 x 36.5  = 1569.5g

Identifying each reaction with their correct term

A double replacement reaction is a type of chemical reaction whereby two reactants exchanges its ions ( cations or anions ) to produce two new products. It can also known as a double displacement reaction. while a single replacement reaction leads to the substitution of one element for another in chemical compound.

Hence we can conclude that the answers to your questions are as listed above.

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Answer:

B..........................

Answer:

4Fe+3O2------>2fe2O3

Explanation:

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Answer:

Molecular geometry, also known as the molecular structure, is the three-dimensional structure or arrangement of atoms in a molecule. Understanding the molecular structure of a compound can help determine the polarity, reactivity, phase of matter, color, magnetism, as well as the biological activity.

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Answer:

1 mole=6.023×10^23 molecules

3.04×10^23 molecules× value of 1 mole

Explanation:

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According to the concept of Avogadro's number, there are 0.504 moles in 3.04×10²³ molecules of hydrogen.

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number.As 1 mole has 6.023×10²³ molecules , thus, 3.04×10²³ molecules of hydrogen will have  3.04×10²³ /6.023×10²³=0.504 moles.

Thus, there are 0.504 moles in 3.04×10²³ molecules of hydrogen.

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Answer:

5 hours is 300 minutes so it goes 1 mile per minute. So 82 minutes = 1 hour and 22 minutes.

Explanation:

So if the car goes 1 mile every minute to reach 82 miles you have to

1 x 82 = 82 minutes converted into hourse = 1 hour and 22 minutes :)

Explanation:

Robins are born in the spring or summer and are mature birds and ready to breed in the following spring or summer. They do not mate for life. Pairs usually remain together during an entire breeding season, which can involve two or three nestings.

Since leaving the nest (fledging), it takes another 10-15 days for babies to become good fliers and individual birds. The parents continue to feed their young throughout this time.

Answer:

2HCl - H2 + Cl2

Explanation:

The two hydrochloric acid molecules decompose into one hydrogen molecule (H2) and one chlorine molecule (Cl2). If there is only one type of a specific molecule present, you should not have to add a coefficient of 1 behind it.

Answer:

d. 1.20 ×10^3 mL

Explanation:

That is the answer have a wonderful day!!

Answer:

im ocean nice to meet u mariam

Explanation:

Answer:

A Pure substance cant be broken down in any way. Nitrogen cant be broken down any further

Explanation:

Air is a mixture of gasses

Juice and be reduced to sugars

Tap water can be boiled into vapor

Answer: Air nitrogen. Elements and compounds are the two types of pure substances. Examples of common elements include carbon, nitrogen and hydrogen. They consist of one type of atom and cannot break down into something else. ... Compounds such as water, salt and sugar are also pure substances.

Explanation:

Answer:

166.4

Explanation:

This is due to the act 1 mol of gas takes up 22.4 liters of space. so 223.5/30.5

(30.5 is molecular weight of the gas) =7.4mols x 22.4 L = 166.4

Answer:

The density of ozone is 4.24.

Explanation:

The relation between the relative rate of diffusion and density is given by :

[tex]r\propto \dfrac{1}{\sqrt d}[/tex]

The given ratio of the relative rate of diffusion of ozone as compared to chlorine is 6:3.

Let the density of ozone is d₂.

[tex]\dfrac{r_1}{r_2}=\sqrt{\dfrac{d_2}{d_1}} \\\\\dfrac{6}{3}=\sqrt{\dfrac{d_2}{36}} \\\\3=\dfrac{\sqrt{d_2}}{6}\\\\d_2=\sqrt{18} \\\\d_2=4.24[/tex]

So, the density of ozone is 4.24.

In accordance with the law of conservation of mass, in any reaction, mass cannot be gained or lost; it must instead be constant in a system. Therefore, in a closed system, mass is not lost, but in an open system, mass is lost as it gets released into the air.

Because the reaction was balanced and contained in the gas collecting arrangement, the mass remained constant, but in the conventional configuration it was not, and the gas had to be released. Due to the gas being released into the atmosphere rather than being retained inside the arrangement, mass was lost.

When the reaction was studied in a closed environment where the gas was collected after the reaction, the mass changes were noted down, which helped to prove the point of the law of conservation of mass and energy. In this case, when the reaction setup was performed in a normal way, the mass lost in the surroundings was not considered or being calculated.

One might consider a soda can as an example, where the carbonated beverage has pressurized carbon dioxide gas in it. When the container is opened, the gas bubbles dissipate into the environment, therefore the mass changes are not recorded. The mass altered would stay the same if the soda can was opened in a manner that allowed the gas evolution to be monitored.

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The value of x is 2  and the formula of compound SFₓ is SF₂.

The Law Of Multiple Proportions was given by Dalton in 1803.

According to this law, when two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in the ratio of small whole numbers.

This law is illustrated by the following example:

Hydrogen combines with oxygen to form two compounds, water, and hydrogen peroxide.

Hydrogen + Oxygen ⇒ Water

    2g             16g           18g

Hydrogen + Oxygen ⇒ Hydrogen Peroxide

   2g               32g               34g

Here, the masses of oxygen (i.e., 16 g and 32 g), which combine with a fixed mass of hydrogen, bear a simple ratio, i.e., 16:32 or 1: 2.

Similarly, the ratio of the mass of fluorine per gram of sulfur in the two compounds is 1.18/3.55 ≈ 1/3

As the ratio of fluorine in the two compounds is 1:3, then according to the law of multiple proportions, the number of fluorine atoms in SFₓ should be 1/3rd of the number of fluorine atoms present in SF₆ which is 6/3=2.

Thus, the formula of compound SFₓ is SF₂.

Therefore, the value of x is 2 and the formula of compound SFₓ is SF₂.

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Answer: In this compound, phosphorous and oxygen act together as one charged particle, which is connected to magnesium, the other charged particle.

Explanation:

Answer:

quantitative

Explanation:

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Answer: C

Explanation:

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90.0 g of vanadium (V) oxygen sample has 1.50 x 10 24 oxygen atoms.

To determine the number of oxygen atoms in a vanadium oxide sample, the following steps must be made.

Step 1: Convert the mass of vanadium(V) oxide to mol of vanadium(V) oxide

mol vanadium(V) oxide = mass / molar mass

mol vanadium (V) oxide = 90.0 g / 181.88 g/mol

mol vanadium (V) oxide = 0.49483 mol

Step 2: Convert mol of vanadium (V) oxide to moles of oxygen using mole ratio

mol oxygen = mol vanadium (V) oxide * mole ratio O / mol V2O5

mol oxygen = 0.49483 mol * 5 mol O / mol V2O5

mol oxygen = 2.47416 mol O

Step 3: Convert to oxygen atoms using Avogadro's number

atoms oxygen = mol oxygen * 6.02214 x 10 23 atoms O /mol O

atoms oxygen = 2.47416 mol O * 6.02214 x 10 23 atoms O/mol O

atoms oxygen = 1.48997 x 10 24 atoms or 1.50 x 10 24 atoms O

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Answer:

Atomic Radius can be simply defined as the distance between the last shell of electrons and the nucleus of an atom.

Answer: The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons. Illustrated Glossary of Organic Chemistry - Atomic radius. Atomic radius: The radius of an atom. This distance between an atom's nucleus and outer electron shell. ... Atomic radius differs with the bonding state of an atom (for example a nonbonded atom of an element versus the same element within a covalent bond). Atomic radius is determined as the distance between the nuclei of two identical atoms bonded together. The atomic radius of atoms generally decreases from left to right across a period. The atomic radius of atoms generally increases from top to bottom within a group.

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The investigation designs that explain the heat transfer when atoms directly touch have been the hand touching the handle of the pan sitting on the lit bunsen burner. Thus, option D is correct.

Heat has been the energy that can neither be created nor destroyed. The heat energy can be transferred from one body to another with the transfer of atomic energy.

The atoms of an object gaining energy start to vibrate and transfer the energy to another atom that is in close proximity to the vibrating atoms.

The boiling of water in a pan by sitting it onto the bunsen burner has been an example of the transfer of heat energy. The heat energy of the burner has been transferred to the atoms of the pan that resulting in the boiling of the water in the pan. It has been the transfer of energy in an object.

By touching the pan, the energy of the pan has been transferred to the body. Thus the transfer of energy takes place between two different objects.

Thus, the example of heat transfer between two different objects has been the transfer of energy from the bunsen burner to the pan, and from touching the pan by hands, the energy has been transferred to the hands, Thus, option D is correct.

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Answer:

The valency does not change going down a group since the bonding behavior is not affected by the core electrons.