The last answer choice us D. Adding more of the chemical will hear the water but only up to a certain temperature

Answer:

A Mineral can be identified if they have the following properties:

1) Naturally occurring: it should be present in nature on its own, steel is not a   mineral because it is made manually.

2) Inorganic it should not be produced by any organism

3) Solid It should not be in liquid or gaseous state, water is not a mineral because its liquid.

4) Definite chemical composition it should have a limited variation in its chemical properties.

5) Ordered internal structure it should have definite internal repeating structure that does not varies much.

Answer:

Cl has 7 dots

if its Cl2; Cl-Cl it will contain 14 dots

Explanation:

The electron-dot formula of the chlorine molecule Cl₂is shown in the attached diagram below.

A lewis electron dot structure is used to represent the number of bonds, the bonding atoms, and the lone pairs left in the atoms in the molecule.

Lines are shown between atoms that are bonded to one another and excess electrons or lone pairs are represented as dot pairs and are placed next to the atoms.

As the valence electrons of each chlorine atom are equal to seven from the electronic configuration of the chlorine atom.

First, the total number of valence electrons in a chlorine molecule is 7 + 7 = 14.

As each chlorine atom needs only one electron to complete its octet. As the octet completes, the rest of the electrons are assigned as the lone pairs of atoms. Therefore, each chlorine atom has three lone pairs of electrons on it.

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Answer:

  (A) is the answer

Explanation:

(A) heat a saturated sugar water solution, dissolve more sugar, then let the solution cool

Answer:

the answer is a

Explanation:

im on edg rn

Answer:

B

Explanation:

I did this and got it correct.

Answer:

Explanation:

Lattice energy is a way to measure the bond strength in ionic compounds. Ionic compounds tend to have high melting and boiling points. Ionic compounds tend to be hard. Ionic compounds have a range of solubilities.

Answer:

applying for a license

Answer:

Applying for a license

Explanation:

This is because you have to have observations,hypothesis and a scientific equation when using The Scientific Method.

Answer:

Explained below

Explanation:

In a decomposition reaction, a substance (commonly a molecule) descomposes in the elements that originally formed it.

The standard formula is:

AB > A + B

In fact, is the opposite of a synthesis reaction.

An example of decomposition reaction is:

H2O > 2H + O

Answer:

9.28moles

Explanation:

Given parameters:

volume  = 11.1L

pressure  = 204atm

temperature  = 24°C = 24 + 273  = 297K

Unknown:

Number of moles of air in the cylinder  = ?

Solution:

To solve this problem, we apply the ideal gas equation;

         PV = nRT

P is the pressure

V is the volume

n is the number of moles

R is the gas constant  = 0.082atmdm³mol⁻¹K⁻¹

T is the temperature

Now insert the parameters and find n;

     204 x 11.1  = n x 0.082 x 297

    226.4  = 24.4n

        n  = 9.28moles

The number of moles of air in the cylinder is 92.98 moles

From the following parameters given, we are to determine the number of moles of air in the cylinder.

Given that:

The number of moles of air can be determined by using the relation for the ideal gas equation which can be expressed as:

where

Making (n) the subject of the formula:

[tex]\mathbf{n = \dfrac{PV}{RT}}[/tex]

[tex]\mathbf{n = \dfrac{204 \ atm \times 11.1 L}{0.082 \ L .atm/mol .K \times 297 \ K}}[/tex]

n = 92.98 moles

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Answer:

B. 5.8 × 10^19 kg

Explanation:

Answer:

saber tooth cats

Explanation:

Answer:

See explanation

Explanation:

The mechanism for the formation of bromohexane from hexene has been clearly shown in the image attached to this answer.

Hexene is attacked by HBr and a carbocation is first formed as shown. The carbocation is flat and planar. it can be attacked on either face by the bromide ion.

Attack on either faces yields a racemic mixture of the R and S enantiomer as shown in the image.

You can use the mechanism shown to fill in the structures.

Answer: If an Atom has 12 Electrons then if it is a Neutral atom then the Atomic Number of the Atom will be 12.

The Electronic Configuration of Element with Atomic Number 12 will be :

⇒ 1s² 2s² 2p⁶ 3s²

We can notice from the Electronic Configuration that :

Given atom has 2 electrons in the 1st shell.

⇒ In the Shell : n = 1

Number of Electrons = 2

In the similar way : Number of Electrons in 2nd shell = 2 + 6 = 8

⇒ In the Shell : n = 2

Number of Electrons = 8

In the similar way : Number of Electrons in 3rd shell = 2

⇒ In the Shell : n = 3

Number of Electrons = 2

Explanation:

When an electron starts in the n=4 shell of a neutral hydrogen atom and once it has fallen to the n=1 shell, then 3 photons will be emitted.

If any electron is presnt in the highest energy shell of an excited atom and when comes back to the ground state then emission of energy takes place.

As we know that by the absorption of one photon, electron will goes on the succeding shell from the previous shell. Similarly when electron come back to the 3rd shell from the 4th shell of a hydrogen atom then 1 photon will emit, from 3rd to 2nd shell 2nd photon will emit and from 2nd to 1st shell 3rd photon will emit.

Hence 3 photons will be emitted once electron will fall into 1st shell from the 4th shell.

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Answer:

Molecules in solids are tightly packed because the atoms are freezed together. Molecules in liquids are loosely packed because atoms are broken down and can move anywhere. Molecules in gases are free; the atoms can move or spread anywhere.

Solids do not move; hence no speed.

Liquids move and slide past past each other.

Gases move freely at high speeds

From the calculation, the voltage of the electrolytic cell is -0.92 V

An electrolytic cell is is cell that produces energy by a nonspontaneous chemical process. The anode of this cell is zinc while the cathode is aluminum.

The voltage of the cell is obtained from Ecathode - E anode = -1.66 V - (-0.74 V) = -0.92 V

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Answer:

P₂ = 0.205torr

Explanation:

Boyle's law relates the pressure and volume of a gas under two different conditions. The equation is:

P₁V₁ = P₂V₂

Where P is pressure and V volume of of 1, initial conditions and 2, final conditions.

P₂ is our incognite

Replacing:

P₁V₁ = P₂V₂

8.20x10⁴torr*15.0L = P₂*600x10⁴L

Answer:

= 3.456 × 1011

(scientific notation)

= 3.456e11

(scientific e notation)

= 345.6 × 109

(engineering notation)

(billion; prefix giga- (G))

= 345600000000

(real number)

Explanation:

i dont know if its math or something else so here are your answers:)

Answer:

0,002

Explanation:

Answer:

You are correct however there is also potential energy because the energy is released over a period of time.

Hope this helps!

Answer:

A. See-Saw

Explanation:

A see-saw is not an inclined plane but it is a lever.

A screw, ramp and a slide are all inclined planes

Simple machines help to make doing work easier. They simply help to amplify effort.

There are different types of simple machines;

An inclined plane is a simple machine made up of a plane fixed at one end and then tilted at the other.

Answer:

You'll find someone. There's a someone for everyone.

Explanation:

And I know how you feel.

Answer:

a. Plum pudding model

Explanation:

The plum pudding model of the atom was proposed by J.J. Thomson. It was the model he derived from his experiment on the gas discharge tube.

J.J Thomson was the first person to discover electrons which he called cathode rays because in the discharge tube, they emanate from the cathode.

Answer:

float ...(i think)

Explanation:

Answer:

The answer is "-10° C".

Explanation:

Fahrenheit and Celsius, both use scales for measuring their temperature standard. The Fahrenheit suggests, as just a cold water point by taking 32° F and hot water rate by taking 212° F. The freezing temperature of both the water at the Celsius scale is 0° C, as well as the boiling point of its water at 100° C.

Converting the Fahrenheit  to Celsius:

Formula: [tex]\bold{^{\circ}F = ^{\circ}C \times 1.8 + 32}[/tex]

°F= 14

[tex]\to 14 = ^{\circ}C \times 1.8 + 32}\\\\\to 14 -32 = ^{\circ}C \times 1.8 \\\\\to -18 = ^{\circ}C \times 1.8 \\\\\to ^{\circ}C = \frac{-18}{1.8} \\\\\to ^{\circ}C = \frac{-180}{18} \\\\\to ^{\circ}C = - 10[/tex]

Answer:

I can help you know how to mark the points.

For the first one point, if you look at the lines that go side to side, you need to find the line that is 20 degrees that's above the blue line. Next, if you look at the lines that go up and down, you need to find the line that is 30 degrees, but is to the right of the blue line. When you plot your point, it should somewhere along the coastline of Saudi Arabia.

For the second point, if you look at the lines that go side to side, you need to find the line that's 40 degrees that's below the blue line. Next, if you look at the lines that go up and down, you need to find the line that is 10 degrees that's to the left of the blue line. When you plot your point, it should be located somewhere in the South Atlantic Ocean.

For the third point, if you look at the lines that go side to side, you need to find the line that's 20 degrees that's below the blue line. Next, if you look at the lines that go up and down, you need to find the line that's 40 degrees that's to the right of the blue line. When you plot your point, it should be kind of located in the Indian Ocean, but not too far from Africa.

(Not too sure how accurate the instructions were, I haven't done longitude and latitude lines in a while)

Explanation:

Picture:

Iron (II) (Fe) oxidized, aluminium (Al) reduced. Hence, option D is correct.

An electrolytic cell converts electrical energy into chemical energy or vice versa.

Oxidation-reduction reactions are balanced by two half overall chemical equations into an oxidation equation and a reduction equation.

Iron (II) (Fe) oxidized, aluminium (Al) reduced of the following is an electrolytic cell.

Hence, option D is correct.

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Answer:

The answer would be "True"