What does each star on the map represent?
O location of an epicenter
O location of a focus
O location of a seismograph
O location of a wave

Explanation:

help me to find Xian pleaseee:( i miss him so much:(

sorry for answering Non sense po i hope u understand me ty po!

Answer:

H3O+

Explanation:

In an aqueous solution, polar water molecules remove one or more hydrogen ions from an acidic molecule (like HCl), leaving behind a negative ion (Cl−). The positive hydrogen ions from the acidic substance bond to water molecules to form hydronium ions (H3O+). In the reaction above, you can see that the acid donates the hydrogen ion. -FLVS

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Answer:  

Molecular polarity

Explanation:

tell me if im right

The specific heat of the metal is calculated using the change in temperature, heat, and mass. The specific heat of the metal is 0.21 J/g °C.

Heat energy is a transfer of the energy lost by a system to the energy gained by another system. The calorimeter is used to measure the specific heat of the system.

Given,

Mass of metal = 500 gm

Temperature = 100 °C

Mass of water = 250 gm

Temperature = 40 °C

Specific heat of water = 4.184 J/g °C

The specific heat (c) of metal is calculated as:

Q = mC ΔT

and, Q (metal) = Q (water)

Substituting values in the above equation:

(500 )(c)(100) = (250)(4.184)(50-40)

50000 c = 10460

c = 0.21 J/g °C

Therefore, the specific heat of metal is 0.21 J/g °C.

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Answer: 3. a slide show that starts on slide one and goes slide by slide to the end​

Explanation:

       An outline is typically a plan with lists of steps and details about the timing, order, etc. In this case, the option that would most need a clear outline is option 3.

        A slide show that starts on slide one and goes slide by slide to the end​.

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Answer: a slide show that starts on slide one and goes slide by slide to the end​

Explanation:

The amount of time of contact, the area of contact, and the specific heats of the substances. Hence, option A is correct.

The heat in calories is required to raise the temperature of one gram of a substance one degree Celsius.

Factors that affect the rate of heat flow include the conductivity of the material, the temperature difference across the material, the thickness of the material, and the area of the material.

Different materials have greater or lesser resistance to heat transfer, making them better insulators or better conductors.

The amount of time of contact, the area of contact, and the specific heats of the substances.

Hence, option A is correct.

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Answer: The answer is C and D

B: If a substance undergoes a physical change, then it will retain most of its original properties because no new substance is formed.

C: If a substance undergoes a chemical change, then it will not retain its original properties because a new substance is formed.

Explanation: I took the test on edg

Answer:

Approx. 38.61 grams

The statement that is NOT true of fission is B. slow neutrons are fired at a large nucleus.

This is the splitting of large nuclei to smaller ones. It could be a natural or spontaneous dissociation by radioactive decay, or can be initiated in   in a laboratory under required conditions. It involves;

Hence, the statement that is not true about fission is that slow neutrons are fired at a large nucleus.

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Answer:

a)CaCO 3→CaO+CO 2CaCO3→CaO+CO2

b) Moles of CaCO3=4.37moles

c) I) Mass of calcium oxide =28g

ii)Mass of carbon dioxide=16.7g

iii)Volume=203cm3

Answer:

b

Explanation:

Heterogeneous is a mixture of two or more things (phases)...the others are all one phase

Answer: You would need 0.67 liters of the concentrated acid. ... To solve for V 1 , multiply 4.0 Molar by 3.00 L and divide by 18.0 M. V1 = M2.V2M1.

Explanation:

The substance that will form a solution when mixed with solid sodium chloride would be  CH₂OH

A solution is only formed when a solute dissolves in a solvent.

In this case, [tex]CCl4_[/tex] and  CH₂OH are the only liquid solvents. However, NaCl is insoluble in [tex]CCl_4[/tex] while it is soluble in  CH₂OH due to its polarity.

Thus, NaCl can form a solution only with  CH₂OH.

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The substance that will form a solution when mixed with solid sodium chloride would be  CH₂OH.

A solution is only formed when a solute dissolves in a solvent.

In this case, CH₂OH are the only liquid solvents. However, NaCl is insoluble in while it is soluble in  CH₂OH due to its polarity and Common-Ion Effect.

Thus, NaCl can form a solution only with CH₂OH.

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The mass percent of oxygen in Nickel([tex]III[/tex])sulfate is [tex]23.68[/tex] percent.

At first, we look up the atomic masses for the element from the periodic table.

The atomic masses are found to be:

Next, we determine how many grams of each element are present in one mole of [tex]Ni_{2}(SO_{4})_{3}[/tex]

The mass of one mole  [tex]Ni_{2}(SO_{4})_{3}[/tex] is:

[tex]117.4g+96g+192g=405.4g[/tex]

So, The mass percent of oxygen [tex]=(96g/405.4)*100=0.2368*100%\\[/tex]

                                                    [tex]=23.68 %[/tex] percent.

To learn more about Mass percent, refer to:

Answer:

Formula-Q = W /V

Explanation:

*hope it's help*

Answer:

[tex]3+[/tex]

Explanation:

[tex]\text{X}_2\text{O}_3 \leftrightharpoons 2\text{X}^{3+}+3\text{O}^{2-}[/tex]

Answer:

true

Explanation:

they can not be stored within the vesicles

Rate = 1.321M/s[H₂CO₃]¹ ; k = 1.32M/s

The 4 ways to increase the concentration of chlorine molecules is listed below and the reaction will go into reverse if cooled.

Le Châtelier's principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change to reestablish an equilibrium.

Energy + HCl (g) + ClNO₃ ⇄  Cl₂  + HNO₃

a. So in this reaction when at equilibrium , To increase the concentration of Chlorine molecules

1. An increase in Temperature will favour the formation of Chlorine molecules.

2. Decrease in concentration of Chlorine , or partial removal of Chlorine will result the equation to go in forward direction.

3.An Increase in the concentration of HCl will favour formation of Chlorine molecules.

4.An Increase in the concentration of  CINO₃ will also favour formation of Chlorine molecules.

b. The cooling would shift the reaction into backward direction as it is an endothermic reaction in forward state.

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The change in temperature had the greatest effect at changing the volume of the balloon.

The gas laws are used to describe the parameters that has to do with gases.

Given that;

P1 = 98.5 kPa

T1 = 18oC or 291 K

V1 =  74.0 dm3

P2 =  7.0 kPa

V2 = ?

T2 = 18oC or 291 K

P1V1/T1 = P2V2/T2

P1V1T2 =P2V2T1

V2= P1V1T2/P2T1

V2 =  98.5 kPa *  74.0 dm3 * 291 K/ 7.0 kPa * 291 K

V2 = 1041.3 dm3

When;

V1 = 1041.3 dm3

T1 = 291 K

V2 = ?

T2 = 80oC or 353 K

V1/T1 = V2/T2

V1T2 = V2T1

V2 = V1T2/T1

V2 = 1041.3 dm3 * 353 K/291 K

V2 = 1263 dm3

The change in temperature had the greatest effect at changing the volume of the balloon.

Given that

V1 =  100 cm^3

T1 = 273 K

P1 = 1.01 * 10^5 Pa

V2 = ?

P2 =  3.00 x 10^-4 Pa

T2 = -180oC or 255 K

V2= P1V1T2/P2T1

V2 =  1.01 * 10^5 Pa * 100 cm^3 * 255 K / 3.00 x 10^-4 Pa * 273 K

V2 = 3.14 * 10^10 cm^3

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Answer:

D. What to produce?

Explanation:

Explanation:

potential energy is the correct answer

Answer:

amine

Explanation:

amine is a base

base would neutralize an acid

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Answer:

amine

Explanation:

There are three number of electrons lost by 1 mole of aluminium because aluminum has +3 charge on it.

When an atom loses electron, positive charge appears on the atom this is called cation. In this reaction we can see that aluminium has +3 charge which means that it loses 3 electrons.

So we can conclude that There are three number of electrons lost by 1 mole of aluminium because aluminum has +3 charge on it.

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The molecule is stable and can exist even though the number of valence electrons around central atom in the molecule are less than 8.

BF3 molecule is a stable molecule because all the electrons present in the outermost shell of boron are covalently bonded with fluorine. Boron in BF3, three bonds is the maximum possible because boron only has 3 electrons to share.

So we can conclude that the molecule is stable and can exist even though the number of valence electrons around central atom in the molecule are less than 8.

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The practical work inside the lab includes lab equipments, chemicals, and the practical outside a laboratory is more about conservation of nature and practicals include natural things in their living areas.

What are lab practicals?

Practicals are set up stations with lab equipments and  chemicals and where students learn practical of the theoretical statements.

The exams of practicals are done to test the leaning of chemistry of the students.

Thus, the practical work inside the lab includes lab equipments, chemicals, and the practical outside a laboratory is more about conservation of nature and practicals include natural things in their living areas.

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The volume of the unit cell is 2.67 x 10⁻²⁸ m³.

In a body-centered cubic unit cell, the volume occupied by the particles of the substance is about 68% of the total unit cell.

Assuming that a single atomic a sphere, the volume is:

Volume(atom) = 4/3 x π x r³

Volume(atom) = 4/3 x π x (169 x 10⁻¹²)³

Volume(atom) = 2.02 x 10⁻²⁹ m³

There are a total of 9 atoms in a body-centered unit cell, so the total volume occupied by atoms is:

2.02 x 10⁻²⁹ x 9

= 1.82 x 10⁻²⁸ m³

Volume of cell = (1.15 x 10⁻²⁸ ) / 0.68

Volume of cell = 2.67 x 10⁻²⁸ m³

Therefore, the volume of the unit cell is 2.67 x 10⁻²⁸ m³.

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The midpoint theorem states that there is a parallel to the line that joins two sides of a triangle on the third side.

In a given triangle, if there are different sides to a triangle, then the midpoint is parallel to the third side from two sides of the same triangle.

For example:

If E and D are the midpoints of the sides AC and AB.

Then the line DE is said to be parallel to the side BC because the side DE is half of the side BC; i.e. DE = (1/2 * BC).

Hence, we can see that your question is incomplete, so a general overview is given to you about the midpoint theorem and how it is used.

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Answer:

ecosystem diversity

Explanation:

hope this helped

A 62.2 g sample of aluminum sulfide has 2.49  * 10²³ formula units.

A mole is defined as  6.022 * 10²³  of atoms , molecules , ions or others.

It is given in the question to find the number of formula units in 62.2 g sample of Aluminum Sulfide.

To determine no. of formula units , No. of mole needs to be determined

Molecular Weight of Aluminum Sulfide is 150.158 gm

150.158 g of Aluminum Sulfide makes 1 mole

62.2 g will make 62.2 * 1 / 150.158 = 0.414 moles

1 mole = 6.022 * 10²³ formula units.

0.414 moles = 0.414 *  6.022 * 10²³

= 2.49  * 10²³ formula units.

Therefore , a 62.2 g sample of aluminum sulfide has 2.49  * 10²³ formula units.

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