Name the following compounds:
a. C2H4 or H2C=CH2
b. CsH6 or CH3CH=CH2
C. C4H8 or H2C=CHCH2CH3
d. CaHs or CH3CH2=CH2CH3
e. CsH1o or CHaCH2CH2CH=CH2

An organism is considered extinct if the fossil evidence reveals the remains of one that is no longer present-day. As a result, scientists might conclude that the majority of Earth's animals are already extinct because they have noted that certain qualities and traits are absent from species that are still alive.

The phrase "extinction" refers to the end of a particular type of organism or a set of types, typically a species. Although the ability to reproduce and bounce back may have been lost earlier, the death of the last individual of the species is widely considered to be the moment of extinction.

Learn more about extinction here https://brainly.com/question/1048615

#SPJ1

Answer:

i think D

Explanation:

The liquids  which will have the highest vapor pressure among the option is water(H20).

The pressure of the vapour produced by the evaporation of a fluid (or solid) over a sample of the fluid (or solid) in such a closed container is known as the vapour pressure of a liquid, also known as the equilibrium pressure of a vapour above its liquid (or solid). The force that is created as liquids evaporate is known as vapour pressure. Surface area, intermolecular forces, and temperature are three variables that frequently have an impact on a vapour press. As the temperature changes, so do the vapour pressures of molecules.

To know more about   Vapor Pressure visit : https://brainly.com/question/29382271

#SPJ4

Physical changes only change the state of substance not it's chemical composition.

Physical changes are defined as changes which affect only the form of a substance but not it's chemical composition. They are used to separate mixtures in to chemical components but cannot be used to separate compounds to simpler compounds.

Physical changes are always reversible using physical means and involve a change in the physical properties.Examples of physical changes include melting,boiling , change in texture, size,color,volume and density.

Learn more about physical changes,here:

https://brainly.com/question/17931044

#SPJ1

Your question is incomplete , but most probably your full question was,how does physical changes work?

Kilometers (km) and miles (mi) are the preferred units for measuring the distance between cities in scientific contexts.

The distance between cities is an essential measurement for scientists, and it is typically expressed in kilometers (km) or miles (mi).

Kilometers (km) are widely adopted by scientists as the primary unit of distance measurement globally.

It is the standard unit in the metric system, which is widely used in scientific research and international communication.

One kilometer is equal to 1000 meters, providing a convenient scale for measuring long distances.

For example, a distance of 100 km between two cities indicates that they are separated by 100,000 meters.

In the United States and the United Kingdom, miles (mi) are commonly used to measure distances.

Although not as prevalent in scientific literature as kilometers, miles are still utilized, especially when dealing with transportation-related data or working within these regions.

One mile is equivalent to approximately 1.6 kilometers. For instance, if the distance between two cities is 50 miles, it means that the two cities are approximately 80.5 kilometers apart.

kilometers (km) and miles (mi) are the preferred units for measuring the distance between cities in scientific contexts.

Kilometers are the global standard, while miles are commonly used in specific regions.

Both units provide scientists with effective measurements for studying and analyzing geographical distances.

To know more about Standard units here: https://brainly.com/question/32814357

#SPJ11

Answer:

\(\Delta G_{rxn}=51.0kJ/mol\)

Explanation:

Hello there!

In this case, according to the definition of the Gibbs free energy of reaction in terms of the Gibbs free energy of formation of the involved reactants and products, it is possible for us to compute it as shown below:

\(\Delta G_{rxn}=3\Delta _f G_{NO_2}+\Delta _f G_{H_2O}-2\Delta _f G_{HNO_3}-\Delta _f G_{NO}\)

Thus, by plugging in the given data, it is possible to obtain:

\(\Delta G_{rxn}=3(51.3)+(-237.1)-2(-110.9)-(87.6)\\\\\Delta G_{rxn}=51.0kJ/mol\)

Best regards!

The standard Gibbs free energy change (ΔG°rxn) for the reaction is 76.7 kJ/mol.

The balanced equation for the reaction is:

2 HNO₃(aq) + NO(g) → 3 NO₂(g) + H₂O(l)

The standard free energy change for a reaction ( ΔG0rxn) can be found out using the equation,

ΔG° = Σ ΔG°fproducts - Σ ΔGf° ​​​​​reactants

ΔG°rxn = ΔH°rxn - TΔS0rxn  

∆H°rxn = change in enthalpy of reaction

∆S° = Change in entropy of reaction

T = Temperature ( 298 K )

ΔG°rxn = (3 × ΔG°f(NO₂(g)) + ΔG°f(H₂O(l))) - (2 × ΔG°f(HNO₃)aq)) + ΔG°f(NO(g)))

Substituting the given ΔG°f values:

ΔG°rxn = (3 × 51.3 kJ/mol) + (-237.1 kJ/mol) - (2 × (-110.9 kJ/mol)) + (87.6 kJ/mol)

ΔG°rxn = 153.9 kJ/mol - 237.1 kJ/mol + 221.8 kJ/mol + 87.6 kJ/mol

ΔG°rxn = 226.2 kJ/mol - 149.5 kJ/mol

ΔG°rxn = 76.7 kJ/mol

To learn more about the Gibbs free energy, follow the link:
https://brainly.com/question/13795204

#SPJ6

a an element with the valence electron configuration 3s23p1 would form a monatomic ion with a charge of  +3 in order to form this ion, the element will donate 3 electrons from the 2s 3p subshells.

This indicates that there is 3 valence electron in both the outermost suborbitals and the outermost shell of this atom for an element with its valence electron at 3s23p1. It would be necessary between losing or receiving an electron and that ion being stable for a monatomic ion to form. Because it produces the 3s23p1 suborbital, which also implies empty 3s23p1 orbitals and is less stable, losing the electron of the suborbital 3s23p1and gaining a charge of +3 requires less energy than gaining an electron.

Additionally, the octet rule is fullfiled.

b. an element with the valence electron configuration 3s23p3 would form a monatomic ion with a charge -3 in order to form this ion, the element will gain 3 electron into the 3p subshells.

The atom now possesses eight electrons in its valence shell, giving it the same electrical configuration as a noble gas (3s23p6) after gaining three electrons. The octet rule is satisfied and the ion is stable as a result.

Learn more about electron configuration at:

brainly.com/question/14077115

#SPJ4

To complete and balance the molecular equation for the reaction of aqueous chromium(II) bromide (CrBr₂) and aqueous sodium carbonate (Na₂CO₃). Here is the step-by-step explanation:

1. Write the unbalanced molecular equation, including the physical states:
CrBr₂(aq) + Na₂CO₃(aq) → ?

2. Determine the products of the reaction. Chromium(II) bromide will react with sodium carbonate to form chromium(II) carbonate (CrCO₃) and sodium bromide (NaBr):
CrBr₂(aq) + Na₂CO₃(aq) → CrCO₃(s) + NaBr(aq)

3. Balance the equation:
CrBr₂(aq) + Na₂CO₃(aq) → CrCO₃(s) + 2 NaBr(aq)

So, the balanced molecular equation for the reaction of aqueous chromium(II) bromide and aqueous sodium carbonate is:
CrBr₂(aq) + Na₂CO₃(aq) → CrCO₃(s) + 2 NaBr(aq)

To know more about the molecular equation refer here :

https://brainly.com/question/14286552#

#SPJ11

The pOH of the solution is 0.63. the concentration of hydroxide ions in moles per liter.

To find the pOH in a 0.235 M NaOH solution, we need to use the equation :pOH = -log[OH-]where [OH-] represents the concentration of hydroxide ions in moles per liter (M).Step-by-step solution:To start, we need to determine the concentration of hydroxide ions [OH-] in the solution. The chemical formula for sodium hydroxide is NaOH. When dissolved in water, it dissociates into Na+ ions and OH- ions, as shown below: NaOH → Na+ + OH-This means that the concentration of hydroxide ions in the solution is the same as the concentration of sodium hydroxide, which is 0.235 M.So, [OH-] = 0.235 MNow we can use this value to calculate the pOH:pOH = -log[OH-]pOH = -log(0.235)pOH = 0.628. When rounded to two decimal places, the pOH of the solution is 0.63.So, the correct answer is option b) 0.63. We can write a 150 word answer as follows: A pH scale measures the concentration of hydrogen ions (H+) in a solution. The pOH is a measure of the concentration of hydroxide ions (OH-) in a solution. To calculate the pOH of a 0.235 M NaOH solution, we first need to determine the concentration of hydroxide ions. When sodium hydroxide (NaOH) is dissolved in water, it dissociates into Na+ ions and OH- ions. This means that the concentration of hydroxide ions in the solution is the same as the concentration of sodium hydroxide, which is 0.235 M. Using the formula pOH = -log[OH-], we can find that the pOH of the solution is 0.63. This means that the concentration of hydroxide ions in the solution is 10^-0.63 M, or approximately 0.199 M.

learn more about hydroxide ions Refer: https://brainly.com/question/14576028

#SPJ11

Answer:

soild from carbon dioxide

Gases deviate from ideal behaviour when they disobey the KMT of ideal gases, listed above.

In the given choices, SO₂ would deviate from ideal behaviour. Unlike the other options, it is a polar molecule. Polar molecules tend to form stronger intermolecular bonds. As a result, SO₂ gas would not obey the postulate: There are neither attractive nor repulsive forces between gas molecules.

Answer:

\( NH_4Cl+NaNO_2\rightarrow NaCl+N_2+2H_2O \)

Answer:

One element takes the place of another in a compound

Explanation:

a p e x - just did the test

The statement best describes a single-replacement reaction as one element takes the place of another in a compound. The correct option is A.

A single replacement reaction is one in which when the reaction happens, one element is substituted by another in a compound. It is also called displacement reaction. The replacing material will always be a pure element.

An example is Zn + 2HCl -> ZnCl₂ + H₂

Thus, the correct option is A. one element takes the place of another in a compound.

Learn more about single replacement reaction, here:

https://brainly.com/question/7039713

#SPJ2

the answer is deceleration.

Answer:

A small positively charged nucleus surrounded by revolving negatively charged electrons in fixed orbits

The animal bone is approximately 19,028 years old based on the 40% loss of carbon-14.

To determine the age of an animal bone based on the percentage of carbon-14 remaining, we can use the concept of half-life. The half-life of carbon-14 is approximately 5,750 years, which means that after this time, half of the carbon-14 originally present will have decayed.

If the bone has lost 40% of its carbon-14, it means that only 60% of the original carbon-14 remains. We can calculate the number of half-lives that have passed to reach this percentage.

Let's assume the original amount of carbon-14 in the bone was 100 units. After one half-life, 50 units of carbon-14 would remain (50% of the original amount). After two half-lives, 25 units would remain (50% of 50 units). Similarly, after three half-lives, 12.5 units would remain (50% of 25 units).

To find out how many half-lives it took to reach 60%, we can set up the following equation:

12.5 units (remaining amount) = 100 units (original amount) * (1/2) ^ n (number of half-lives)

Solving for n:

12.5 = 100 * (1/2) ^ n

Dividing both sides by 100:

0.125 = (1/2) ^ n

Taking the logarithm of both sides:

log(0.125) = log[(1/2) ^ n]

n * log(1/2) = log(0.125)

n = log(0.125) / log(1/2)

Using a calculator, we can find:

n ≈ 3.3219

Therefore, approximately 3.3219 half-lives have passed.

Since each half-life is approximately 5,750 years, we can calculate the age of the bone:

Age = Number of half-lives * Half-life duration

Age = 3.3219 * 5,750 years

Age ≈ 19,028 years

Thus, the animal bone is approximately 19,028 years old based on the 40% loss of carbon-14.

learn more about carbon-14 here

https://brainly.com/question/30233846

#SPJ11

The difference in degrees Fahrenheit between the maximum expected temperatures by the end of the century between the lower and higher emissions scenarios can vary depending on various factors and assumptions.

However, in general, the lower emissions scenario is expected to result in a lower increase in global temperatures compared to the higher emissions scenario.

This means that the maximum expected temperature rise by the end of the century under the lower emissions scenario would be lower than that of the higher emissions scenario.

The specific temperature difference would depend on the specific projections and models used, but it highlights the significant impact that emissions reductions can have on mitigating future temperature increases.

To know more about global temperatures, refer here:

https://brainly.com/question/14367287#

#SPJ11

Answer:

Answers. 7.8286×10²¹ particles.

Explanation:

The particles present in the sample of ammonium carbonate are  \(0.7826*10^{23}\) particles. This can be calculated by using number of moles.

It is defined as the given mass over molar mass.

Given mass= 12.7 g

Molar mass of ammonium carbonate= 96.06 g/mol

Number of moles = 12.7 g / 96.06 g/mol

Number of moles = 0.13 moles

One mole:

A mole is the amount (10) of material containing \(6.02214 * 10^{23}\) particles.

1 mol =  \(6.02214 * 10^{23}\) particles

So, 0.13 moles = \(6.02214*10^{23}*0.13=0.7826*10^{23} \text{ particles}\)

thus, there are \(0.7826*10^{23}\) particles are present in 12.7 g of ammonium carbonate.

Find more information about One mole here:

brainly.com/question/1358482

Answer:

C = m/V

Explanation:

In order to calculate the concentration of a mixture you would need to use the formula for concentration, which is the following...

C = m/V

In this formula C is the concentration, m is the mass of the compound that is being added and mixed into the solution, and V is the total volume of the mixture. The mass of m is in terms of number of moles. Therefore, we would need more information in order to calculate the actual concentration of the mixture that you are trying to find in this scenario. Using the formula above should be enough using the values that you have in your actual workbook.

Answer:

0.01134kg

Explanation:

You divide by 1000 to get the kg

Answer:

C₂H6

Explanation:

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A

A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:

A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.

B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.

D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.

In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A

For more such questions on hydrocarbon visit:

https://brainly.com/question/21281906

#SPJ8

Sulphur dioxide (SO2) is a molecule that consists of one sulphur atom and two oxygen atoms. The sulphur atom has a charge of +6 and the oxygen atoms have a charge of -2, so the overall charge of the molecule is neutral, as the charges cancel out.

The formula for sulphur dioxide is determined by the number of atoms of each element that are present in the molecule. In the case of sulphur dioxide, there is one sulphur atom and two oxygen atoms, so the formula is written as SO2.

The common charges formed by sulphur and oxygen can be used to determine the formula of a compound. The charges of the atoms can be used to determine the number of atoms needed to balance the charges and result in a neutral compound. However, it would not be the only way to determine the formula of a compound; other ways include observing the chemical reactions, using mass spectroscopy, or using X-ray crystallography.

It is possible to use the common charges that sulphur and oxygen atoms make to determine the formula of a compound by determining the number of atoms needed to balance the charges and result in a neutral compound. However, this is not the only way to determine the formula of a compound. Other methods include observing the chemical reactions, using mass spectroscopy, or using X-ray crystallography.

In summary, the formula for sulphur dioxide (SO2) is determined by the number of atoms of each element that are present in the molecule, which in this case is one sulphur atom and two oxygen atoms. The charges of the atoms can be used to determine the number of atoms needed to balance the charges and result in a neutral compound, but it is not the only way to determine the formula of a compound.

Learn more about Sulphur dioxide : https://brainly.com/question/15654465

Answer:

a

Explanation:

The heat capacity of a substance is the heat energy required to rise its temperature per one degree Celsius. Hence its unit is J/°C.

Heat capacity is the amount of heat energy required to raise the temperature of a substance by 1 degree Celsius or 1 Kelvin. It is expressed in the following units:

Joules per degree Celsius (J/°C)

Joules per Kelvin (J/K)

Calories per degree Celsius (cal/°C)

Calories per Kelvin (cal/K)

Joules per gram per degree Celsius (J/(g·°C))

Joules per gram per Kelvin (J/(g·K)) etc.

If in terms of simply the energy, then, The following units are used.

Joules (J) , Calories (cal) , Degrees Celsius (°C), Kelvin (K)

The choice of unit depends on the specific application and the system of units being used. The SI unit for heat capacity is J/K, while the traditional unit is cal/°C.

The use of per gram units is common in the context of specific heat capacity, which is the amount of heat energy required to raise the temperature of a unit mass of a substance by 1 degree Celsius or 1 Kelvin.

Therefore, here, the unit of heat capacity is J/°C.

Find more on heat capacity :

https://brainly.com/question/28302909

#SPJ7

MgO contains 60% out of 70 grams

Hence , 60/100 × 70 grams

= 42 grams

Answer:

D . oxidation and reduction oxidation

The light reactions synthesize ATP, NADPH, and oxygen using oxidation and reduction. Therefore, option D is correct.

The term oxidation is defined as the loss of electron and tha term reduction is defined as the gain of electron. When oxidation and reduction takes place simultaneously is called as redox reaction.

In the light reactions, energy from sunlight drives the synthesis of ATP and NADPH, the formation of O2 from H2O.

During the light reactions, water is oxidized, electrons are shifted from water to NADP+, and ATP is compounded. The three components of the light reaction can be resumed with equations: Oxidation of water. 2 H2O 02 + 4e- + 4 H.

Thus,The light reactions synthesize ATP, NADPH, and oxygen using  oxidation and reduction, option D is correct.

To learn more about an oxidation and reduction, follow the link;

https://brainly.com/question/13699873

#SPJ6

Answer: ur mom

Explanation:

u don’t know she could be hot