What is the difference between the epicenter and focus

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question

mass of copper = 24 g

volume = 2.7 mL

The density of the metal is

\(density = \frac{24}{2.7} \\ = 8.8888888888 ...\)

We have the final answer as

Hope this helps you

Answer:

your answer would be C

Explanation:

atoms that picks up the extra electron becomes a negatively charged ion (anion)

if we reverse that,

it would be a positively charged ion due to losing an electron

Scientists uses scientific methods and well designed experiments to solve a scientific question. They can use some laws and previous scientific records as an aid.

A scientific question arises from selected topic under study. A scientific question addresses a natural phenomenon, a socially relevant problem or a any personal curiosity.

The scientific question must be testable. The first prediction for the question based on observation and scientific records is called the hypothesis.

The hypothesis must be tested using a well designed scientific experiment based on a scientific method. The methodology should be clearly specify what to collect and how to use them. Hence, option B is correct.

Find more on scientific methods:

https://brainly.com/question/16172865

#SPJ1

Answer:

\(Cs^+\)

Explanation:

Cesium Lewis dot structure would look like this:

·Cs,  because it only has one valence electron. But, since it has a plus, that means we lost an electron. So, we have to get rid of the dot and you have:

\(Cs^+\)

The pressure exerted by a column of mercury that is about 760 mm high corresponds to approximately 0.987 atm.

To calculate the pressure exerted by a column of mercury, we can use the formula:

Pressure = density * gravity * height

Given:

Density of mercury = 13.6 g/cm³

Height of the mercury column = 760 mm = 76 cm

Acceleration due to gravity = 9.8 m/s²

First, we need to convert the height of the mercury column from centimeters to meters:

Height = 76 cm * (1 m / 100 cm) = 0.76 m

Now, we can calculate the pressure:

Pressure = 13.6 g/cm³ * 9.8 m/s² * 0.76 m

To ensure consistent units, we need to convert the density from grams per cubic centimeter (g/cm³) to kilograms per cubic meter (kg/m³):

Density = 13.6 g/cm³ * (1 kg / 1000 g) * (1 cm³ / (1e-6 m³))

Density = 13600 kg/m³

Plugging in the values into the pressure formula:

Pressure = 13600 kg/m³ * 9.8 m/s² * 0.76 m

Pressure = 99992.8 Pa

We can express the pressure in terms of atmospheric pressure:

1 atm = 101325 Pa (approximately)

To compare the pressure with atmospheric pressure, we can convert 99992.8 Pa to atm:

Pressure in atm = 99992.8 Pa / 101325 Pa/atm

Pressure in atm ≈ 0.987 atm

The pressure exerted by a column of mercury that is about 760 mm high corresponds to approximately 0.987 atm. Since atmospheric pressure near sea level is approximately 1 atm, this calculation supports the claim that atmospheric pressure near sea level is equivalent to the pressure exerted by a column of mercury about 760 mm high.

for more such questions on pressure

https://brainly.com/question/24719118

#SPJ11

The initial pressure exerted on the balloon was 8 atmospheres.

To find the initial pressure exerted on the balloon, we can use Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume when temperature is constant. The formula for Boyle's Law is P1V1 = P2V2, where P1 and V1 represent the initial pressure and volume, and P2 and V2 represent the final pressure and volume.

In this case, we are given that the initial volume (V1) is 14 L and the final volume (V2) is double the initial volume (2 x V1). We are also given that the final pressure (P2) is 4 atmospheres. We need to find the initial pressure (P1).

Using the formula P1V1 = P2V2 and plugging in the given values, we have:

P1 * 14 = 4 * (2 * 14)

P1 * 14 = 4 * 28

P1 * 14 = 112

To isolate P1, we divide both sides of the equation by 14:

P1 = 112 / 14

P1 = 8

It's important to note that the unit of pressure in this case is atmospheres, as stated in the question. If the pressure unit had been different, appropriate unit conversions would have been necessary.

For more such questions on initial pressure visit:

https://brainly.com/question/24719118

#SPJ8

The correct steps needed are to multiply the first equation, multiply the second equation, add the two equations obtained, subtract the equation obtained in step 3 from that in step one, simplification of the equation obtained in step 4, and use the given equation to substitute C2H2(g) in the equation obtained in step 5.

The final reaction can be achieved by combining the two contributing equations as follows:

Multiply the first equation by 2 to obtain:2C₂H₂(g) + 5O₂(g) ---> 4CO₂(g) + 2H₂O(ℓ) ΔH° = −2599 kJ

Multiply the second equation by 2 and the third equation by 1 to obtain:2C(s) + 2O₂(g) --->

2CO₂(g) ΔH° = −787 kJH₂(g) + 1O₂(g) ---> H₂O(ℓ) ΔH° = −285.8 kJ

Add the two equations obtained in step 2 to obtain:2C(s) + 2H₂(g) + 3O₂(g) ---> 2CO₂(g) + 2H₂O(ℓ) ΔH° = −1072.8 kJ

Subtract the equation obtained in step 3 from the equation obtained in step 1 to eliminate the O₂ term:2C₂H₂(g) - 2C(s) - 2H₂(g) ---> 4CO₂(g) + 2H₂O(ℓ) - 2CO₂(g) - 2H₂O(ℓ) ΔH° = −1526.2 kJ

Simplify the equation obtained in step 4 by canceling out the H₂O terms: 2C₂H₂(g) - 2C(s) - 2H₂(g) ---> 2CO₂(g) ΔH° = −1526.2 kJ

Finally, use the given equation to substitute C₂H₂(g) in the equation obtained in step 5:

2C(s) + H₂(g) + 5/2O₂(g) ---> 2CO₂(g) + H₂O(ℓ) ΔH° = −1299.5 kJ

By adding this equation to the equation obtained in step 5, we get:4C(s) + 2H₂(g) + 5O₂(g) ---> 4CO₂(g) + 2H₂O(ℓ) ΔH° = −2825.7 kJ

Therefore, the correct steps needed to achieve the final reaction are:

2C(s) + H₂(g) + 5/2O₂(g) --->

2CO(g) + H₂O(ℓ) ΔH° = −1299.5 kJ

2C₂H₂(g) + 5O₂(g) --->

4CO₂(g) + 2H₂O(ℓ) ΔH° = −2599 kJ

4C(s) + 2H₂(g) + 5O₂(g) --->

4CO₂(g) + 2H₂O(ℓ) ΔH° = −2825.7 kJ.

Learn more on chemical reactions here https://brainly.com/question/11231920

#SPJ1

The pressure of the gas when the temperature changes from -75.0°C to 1000.0°C will be approximately 9.51 atm.

Gay-Lussac's law states that the pressure exerted by a given quantity of gas varies directly with the absolute temperature of the gas.

It is expressed as;

P₁/T₁ = P₂/T₂

Given that:

We substitute our values into the expression above.

P₁/T₁ = P₂/T₂

P₁T₂ = P₂T₁

\(P_2 = \frac{P_1T_2}{T_1}\\ \\P_2 = \frac{1.480\ *\ 1273.15 }{198.15} \\\\P_2 = 9.51 \ atm\)

Therefore, the final pressure is 9.51 atm.

Learn more about Gay-Lussac's law here: brainly.com/question/1358307

#SPJ1

6.02 x \(10^{20\) formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

To convert formula units of MgCl₂ to moles of MgCl₂, we need to use Avogadro's number, which relates the number of formula units to the number of moles.

Avogadro's number (NA) is approximately 6.022 x 10^23 formula units per mole.

Given that we have 6.02 x 10^20 formula units of MgCl₂, we can set up a conversion factor to convert to moles:

(6.02 x 10^20 formula units MgCl₂) * (1 mol MgCl₂ / (6.022 x 10^23 formula units MgCl₂))

The formula units of MgCl₂ cancel out, and we are left with moles of MgCl₂:

(6.02 x 10^20) * (1 mol / 6.022 x 10^23) = 0.1 mol

Therefore, 6.02 x 10^20 formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

It's important to note that this conversion assumes that each formula unit of MgCl₂ represents one mole of MgCl₂. This is based on the stoichiometry of the compound, where there is one mole of MgCl₂ for every one formula unit.

Additionally, this conversion is valid for any substance, not just MgCl₂, as long as you know the value of Avogadro's number and the number of formula units or particles you have.

For more such questions on MgCl₂ visit:

https://brainly.com/question/26311875

#SPJ8

Answer:

Is this math? Cause as a fourth grader, I can do Algebra, but not this.

Explanation:

Answer:

rank me as brainliest

Explanation:

The esterification reaction is a name reaction in organic chemistry, where it is called Fischer esterification. In addition, when the reverse reaction is promoted by using a base, it is called a saponification reaction.

Answer:

The esterification reaction is a name reaction in organic chemistry, where it is called Fischer esterification. In addition, when the reverse reaction is promoted by using a base, it is called a hydrolysis reaction.

Explanation:

The Fischer esterification is a type of organic reaction that involves the conversion of a carboxylic acid and an alcohol into an ester and water, catalyzed by an acid catalyst. This reaction is named after its discoverer, Emil Fischer, a German chemist who first described the reaction in 1895.

The general equation for Fischer esterification is:

Carboxylic acid + Alcohol → Ester + Water

For example, the reaction between acetic acid and ethanol to form ethyl acetate (a commonly used solvent and flavoring agent) can be represented as follows:

CH3COOH + C2H5OH → CH3COOC2H5 + H2O

The Fischer esterification is an important reaction in organic chemistry because esters are important compounds in a variety of applications, including the food industry (as flavorings and fragrances), the pharmaceutical industry (as intermediates in the synthesis of drugs), and the polymer industry (as monomers).

When the reverse reaction of Fischer esterification is promoted by using a base, it is called a hydrolysis reaction. Hydrolysis is the process of breaking down a compound by adding water. In the case of esters, hydrolysis occurs when the ester bond is broken by the addition of water, yielding a carboxylic acid and an alcohol.

The general equation for hydrolysis of an ester is:

Ester + Water → Carboxylic acid + Alcohol

For example, the hydrolysis of ethyl acetate can be represented as follows:

CH3COOC2H5 + H2O → CH3COOH + C2H5OH

Hydrolysis of esters is an important reaction in organic chemistry because it is a common route for the degradation of esters in nature, as well as in many industrial processes where it is used for the production of carboxylic acids and alcohols.

Answer:

Therefore the theoretical density of iron is 7.877 g/cm³ .

Therefore the number of vacancy per cm³ is

Explanation:

Based on the kinetic theory of gases, scientists could infer from Robert Boyle’s Law that an inverse relationship exists between the pressure of gases and their volume if the temperature is kept constant because the decrease in the volume of the vessel containing the gases will result in less room for movement of the gases and hence, the frequency of collisions increases and subsequently the pressure of the gases will increase.

According to the kinetic theory of gases, a gas is made up of numerous submicroscopic particles (atoms or molecules), all of which are moving randomly and continuously. The container's walls and the quickly moving particles frequently collide in this situation resulting in the gas pressure.

Learn more about the kinetic theory of gases at: https://brainly.com/question/134712

#SPJ1

CO₂ have a higher boiling point than CH₄ when they both possess dispersion forces because CO₂ consists of polar bonds between carbon and oxygen.

Intermolecular forces determine bulk properties, such as the melting points of solids and the boiling points of liquids.

Liquids boil when the molecules have enough thermal energy to overcome the intermolecular attractive forces that hold them together, thereby forming bubbles of vapor within the liquid.

CO₂ have a higher boiling point than CH₄ when they both possess dispersion forces because CO₂ consists of polar bonds between carbon and oxygen. The polarity increases the boiling point of the molecule.

Learn more about Intermolecular forces, here:

https://brainly.com/question/31797315

#SPJ1

For Test One, phenotype ratio is Short fur : Long fur = 2 : 0; For Test Two, the phenotype ratio is Short fur : Long fur = 3 : 1; For Test Three, the phenotype ratios will be Short fur : Long fur = 0 : 2

For Test One:

Parent 1: FF (homozygous dominant for short fur)

Parent 2: Ff (heterozygous for short fur)

The Punnett square for this cross will give the following genotype ratios:

FF : Ff = 1 : 1

And the corresponding phenotype ratios will be:

Short fur : Long fur = 2 : 0 or 100% short fur

For Test Two:

Parent 1: Ff (heterozygous for short fur)

Parent 2: Ff (heterozygous for short fur)

The Punnett square for this cross will give the following genotype ratios:

FF : Ff : ff = 1 : 2 : 1

And the corresponding phenotype ratios will be:

Short fur : Long fur = 3 : 1 or 75% short fur and 25% long fur

For Test Three:

Parent 1: ff (homozygous recessive for long fur)

Parent 2: ff (homozygous recessive for long fur)

The Punnett square for this cross will give the following genotype ratios:

ff : ff = 1 : 0

And the corresponding phenotype ratios will be:

Short fur : Long fur = 0 : 2 or 100% long fur

For this investigation, the test variable is the breed of hamster and the outcome variable is the phenotype of the hamster.

Learn more about heredity at: https://brainly.com/question/930755

#SPJ1

The question asks us to specify the effect of introducing a functional group into a carbon chain.

A simple carbon chain, with only carbons and hydrogens, doesn't show great reactivity because the carbon-to-carbon and carbon-to-hydrogen bonds are strong and the charge of the electrons from theses bonds is spread relatively even over the bonded atoms. Therefore, chains that contain only these two atoms, specially those with only single bonds, are not very reactive.

On the other side, if one or more weaker bonds are introduced into the chain, with the charge of electrons unequally spread over the bond, the reactivity of the molecule tends to increase. When an heteroatom is introduced, for example, the electronegativity difference between atoms will make the electrons more drawn to one side of the bond than the other.

For that reason, we can say that a functional group introduces heteroatoms into a carbon chain to increase the reactivity of this chain (option A).

Answer:

A. A stroller being pushed

Explanation:

The person pushing the stroller is putting more force than the stroller is.

The final temperature of the water is: T_final = 45.0°C

We can use the formula for the specific heat capacity of the water to solve this problem:

q = mcΔT

First, we can calculate the initial energy of the water:

q = mcΔT

q = (10.0 g) (4.184 J/g°C) (25.0°C)

q = 1,046 J

Next, we can calculate the final temperature after absorbing 840 J:

q = mcΔT

840 J = (10.0 g) (4.184 J/g°C) (ΔT)

ΔT = 20.0°C

Therefore, the final temperature of the water is:

T_final = T_initial + ΔT

T_final = 25.0°C + 20.0°C

T_final = 45.0°C

To know more about final temperature, here

brainly.com/question/11244611

#SPJ1

Explanation:

sodium = +1

strontium = +2

iron III = +3

nitride = -3

sulfide = -2

bromide = -1

GOOD LUCK!

Answer:

Well if you want to kiss them go for it, but if you don't then say sorry but I don't feel comfortable with that.

Hope everything goes well <3

Answer:

Au^3+(aq) +3e ------> Au(s). 1.50 V

Explanation:

When we construct the galvanic cell, our intention is to produce energy by spontaneous electrochemical reactions. In order to have a spontaneous electrochemical reaction, E°cell must be positive. The more positive the value of E°cell, the more spontaneous the reaction is.

E°cell= E°cathode - E°anode

If E°cathode= 1.50 V

E°anode= -0.25 V

E°cell= 1.50 -(-0.25)

E°cell= 1.75 V

Hence the process; Au^3+(aq) +3e ------> Au(s) yields the highest standard cell potential

Answer:

D-The hydrosphere looks blue and covers three-fourths of the Earth’s surface.

Explanation:

Answer:

it went under the process known as crystalization

Explanation:

am a chemist

Answer:

Ar = 1.63g/L; N₂ = 1.14g/L. The density of Argon is higher than density of nitrogen because molar mass of argon > Molar mass nitrogen

Explanation:

It is possible to obtain the density of a gas using the formula:

ρ = PM / RT

Where ρ is density in g/L

P is pressure of the gas (101.3kPa)

M is molar mass of the gas (Ar: 39.9g/mol; N₂: 28g/mol)

R is gas constant (8.314kPaL/Kmol)

And T is temperature (298K)

Thus, density of Ar and N₂ is:

Ar = 101.3kPa*39.9g/mol / 8.314kPaL/Kmol*298K

Ar = 1.63g/L

N₂ = 101.3kPa*28g/mol / 8.314kPaL/Kmol*298K

N₂ = 1.14g/L

As general rule, under the same conditions, the gas with the higher molar mass will be the gas with higher density.

The argon gas will have greater density when compared to nitrogen gas in the given condition.

The given parameters;

The ideal gas law can be used to determine the density of the gases;

\(PV = nRT\\\\PV = \frac{m}{M} RT\\\\PM = \frac{m}{V} RT\\\\PM = \rho RT\\\\\rho = \frac{PM}{RT}\)

where;

The molar mass of nitrogen gas is given as;

M = 14 g/mol

The molar mass of argon gas is given as;

M = 40 g/mol

From the formula given above, we can conclude that the gas with greater molar mass will have greater density, in this case the argon gas will have greater density when compared to nitrogen gas in the same condition.

Learn more here:https://brainly.com/question/14812509

Answer:

Explanation:

Hope it's help !