Write electron configurations for each of the following elements. Use the symbol of the previous noble gas in brackets to represent the core electrons.
1. Ga
2. As
3. Rb
4. Sn

Answer: if a biochemical reaction in our body is too fast or too slow it can endanger our life.

Explanation:in other example ,rate of reaction is obviously very important to the chemical industry. The rate of reaction dictates the rate of production our daily products.

A chemical production company annually produces 500 million pounds of the chemical maleic anhydride using four different reactors. Each reactor can be run on only one of the four settings.

This means that each reactor contributes to the production process by running on a specific setting. The specific settings may vary depending on factors such as temperature, pressure, or other variables relevant to the production of maleic anhydride.

By utilizing all four reactors and their respective settings, the company can achieve the desired annual production of 500 million pounds. Each reactor plays a crucial role in the overall process, ensuring that the necessary quantity of maleic anhydride is produced efficiently and effectively.

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Answer:

A) 4 and 3

Explanation:

You don't count the scientific notations in his problem sine they are only trailing zeros which they don't count as sig figs so look at the original numbers. Remember that zeros after decimal points or in-between natural numbers count with that said 2.020 has 4 sig figs and 5.00 has 3 sig figs

The structure of the 4-ethyl-2-methyl-3-propyl heptanoic acid is shown in the image attached

The arrangement and connectivity of the atoms within a molecule are referred to as the structure of an organic substance. Along with other elements including oxygen, nitrogen, sulfur, and halogens, organic molecules are largely made of carbon atoms bound to hydrogen atoms.

It is crucial to remember that organic compounds can exist in several isomeric forms, where the same chemical formula leads to various structural configurations. The connection of atoms or the spatial arrangement of atoms in three-dimensional space might vary between isomers.

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The reaction that follows the law of conservation of mass is \(\rm 2\;H_2\;+\;O_2\;\rightarrow\;2\;H_2O\). Thus, option C is correct.

The law of conservation of mass has been stating that in a chemical reaction, the mass at the product and reactants has been equal.

The atoms has been conserved in the reaction that follows the law of conservation of mass.

The moles of reactants and products in the following reactions has been:

A. \(\rm H_2\;+\;O_2\;\rightarrow\;H_2O\)

Hydrogen: The atoms in reactant=2

Atoms in product=2

Oxygen: The atoms in reactant=2

Atoms in product=1

The product and reactant are not equivalent, thus it not follows the law of conservation of mass.

B. \(\rm H_2\;+\;O_2\;\rightarrow\;H_2O\;+\;4\;He\)

Hydrogen: The atoms in reactant=2

Atoms in product=2

Oxygen: The atoms in reactant=2

Atoms in product=1

He: The atoms in reactant=0

Atoms in product=4

The product and reactant are not equivalent, thus it not follows the law of conservation of mass.

C. \(\rm 2\;H_2\;+\;O_2\;\rightarrow\;2\;H_2O\)

Hydrogen: The atoms in reactant=4

Atoms in product=4

Oxygen: The atoms in reactant=2

Atoms in product=2

The product and reactant are equivalent, thus it follows the law of conservation of mass.

D. \(\rm \;H_2\;+\;O_2\;\rightarrow\;2\;H_2O\)

Hydrogen: The atoms in reactant=2

Atoms in product=4

Oxygen: The atoms in reactant=2

Atoms in product=2

The product and reactant are not equivalent, thus it not follows the law of conservation of mass.

The reaction that follows the law of conservation of mass is \(\rm 2\;H_2\;+\;O_2\;\rightarrow\;2\;H_2O\). Thus, option C is correct.

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The names of the compounds differ by the type of metal present in them, which are Calcium (Ca) and Cadmium (Cd)

From the question,

We are to determine the how the name of CaS differ from the name of CdS

First, we will determine the identities of the elements in the given compounds

Ca represents calcium

and

S represents sulfur

∴ The compound is named Calcium sulfide

Cd represents the element Cadmium

and

S represent the element Sulfur

∴ The compound is named Cadmium sulfide

Hence, the names of the compounds differ by the type of metal present in them, which are Calcium (Ca) and Cadmium (Cd)

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Answer:

Explanation:

Answer:

I was just wondering if you want to be a good day at work and I don't know the answer sorry

Answer:

Chlorine - 17,35.45,18,17,17

Carbon - 6, 12.01,6, 6,6

Lead - 82, 207.2,125,82,82

Iron - 26, 55.847, 30, 26,26

Magnesium - 12, 24.305, 12,12,12

Uranium - 92, 238.09, 146,92,92

Cobalt - 27, 58.933,32, 27,27

Calcium - 20, 40.078, 20,20,20

Platinum - 78, 195.078,117, 78,78

Phosphorus - 15, 30.974, 16, 15,15

Explanation: https://hobart.k12.in.us/ksms/PeriodicTable/abc.htm

Answer:

The solubility of gases in a liquid or another gas is a measure of the extent to which the gas can dissolve in the liquid or gas. It is usually expressed as the amount of gas that can dissolve in a given volume of liquid or gas at a specific temperature and pressure. The solubility of gases in a mixture, such as the air in your classroom, can vary depending on the specific gases present and their relative proportions.

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Explanation:

A carbon-hydrogen molecule itself does not have a specific classification like alkyne. The classification of hydrocarbon compounds, including alkanes, alkenes, and alkynes, is based on the arrangement of carbon and hydrogen atoms in the larger molecule.

To be identified as an alkyne, a carbon-hydrogen (C-H) molecule does not have to have any specific number of bonds. Carbon-hydrogen molecules themselves do not have specific classifications like alkanes, alkenes, or alkynes. These terms are typically used to describe hydrocarbon compounds consisting of carbon and hydrogen atoms in specific arrangements.

Alkanes are hydrocarbons that contain only single bonds, alkenes contain at least one double bond, and alkynes contain at least one triple bond. These classifications are based on the types of bonds between carbon atoms, rather than the number of bonds a carbon-hydrogen molecule has.

In summary, a carbon-hydrogen molecule itself does not have a specific classification like alkyne. The classification of hydrocarbon compounds, including alkanes, alkenes, and alkynes, is based on the arrangement of carbon and hydrogen atoms in the larger molecule.

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Answer: [Xe] 6s^2 6p^3

Explanation: The noble gases are on the last column of the periodic table and Xenon (Xe) is the noble gas before Bismuth (Bi). Then you go down to the next row which is 6s^2 and 6p^3.

Answer:

The correct answer is {Xe] 4f14 5d10 6s2 6p3

Explanation:

Answer:

oppositely charged ions in a chemical compound

Explanation:

Answer:

Between ions

Explanation:

The concentration of H+ at equilibrium is 1.06 x 10^-4 M.

To determine the concentration of H+ in the weak acid solution at equilibrium, we need to use the percent ionization and the initial concentration of the weak acid.

Let's assume that the weak acid is denoted by HA. Then, we can write the equilibrium equation for the dissociation of HA as:

HA ⇌ H+ + A-

The equilibrium constant expression for this dissociation reaction is:

Ka = [H+][A-]/[HA]

Since the acid is weak, we can assume that the concentration of A- at equilibrium is approximately equal to the initial concentration of HA, since only a small fraction of HA is dissociated. Therefore, we can simplify the equilibrium constant expression to:

Ka = [H+]^2/[HA]

Rearranging this equation, we get:

[H+]^2 = Ka[HA]

Taking the square root of both sides, we get:

[H+] = sqrt(Ka[HA])

Now, we can plug in the values given in the problem:

Ka = unknown

[HA] = 0.00550 M

percent ionization = 8.20%

To find Ka, we can use the percent ionization:

percent ionization = [H+]/[HA] x 100%

8.20% = [H+]/0.00550 M x 100%

[H+] = 0.000451 M

Now, we can use the equation we derived earlier to find [H+] at equilibrium:

[H+] = sqrt(Ka[HA])

0.000451 M = sqrt(Ka x 0.00550 M)

Squaring both sides, we get:

Ka x 0.00550 M = (0.000451 M)^2

Solving for Ka, we get:

Ka = (0.000451 M)^2 / 0.00550 M

Ka = 3.70 x 10^-6 M

Finally, we can use the equation [H+] = sqrt(Ka[HA]) to find the concentration of H+ at equilibrium:

[H+] = sqrt(3.70 x 10^-6 M x 0.00550 M)

[H+] = 1.06 x 10^-4 M

Therefore, the concentration of H+ at equilibrium is 1.06 x 10^-4 M.

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Answer:

No, all liquids do not evaporate at the same rate.

Explanation:

The rate of evaporation depends on several factors, including the strength of intermolecular forces, temperature, surface area, and atmospheric pressure.

Intermolecular forces refer to the attractive forces between the molecules of a liquid, which can affect the rate of evaporation. Liquids with weaker intermolecular forces tend to evaporate more quickly because less energy is required to overcome the attractive forces between the molecules. For example, acetone has weaker intermolecular forces than water and therefore evaporates more quickly than water.

Temperature also affects the rate of evaporation. As the temperature of a liquid increases, the kinetic energy of the molecules increases, and more molecules have enough energy to escape into the gas phase. Therefore, liquids at higher temperatures tend to evaporate more quickly than those at lower temperatures.

The surface area of the liquid also plays a role in the rate of evaporation. Liquids with larger surface areas exposed to the air tend to evaporate more quickly than those with smaller surface areas.

Finally, atmospheric pressure affects the rate of evaporation. At higher altitudes where atmospheric pressure is lower, liquids tend to evaporate more quickly because there is less atmospheric pressure pushing down on the liquid, making it easier for molecules to escape into the gas phase.

In summary, the rate of evaporation depends on several factors, including the strength of intermolecular forces, temperature, surface area, and atmospheric pressure, and therefore, not all liquids evaporate at the same rate.

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The day is the independent variable and the mileage is the dependent variable. Thus option B is correct.

Variables are the measurable parameter can be manipulated and controlled in research. For example person's eye color, its value can be changed from brown to blue depend on different factors.

An independent variable is a single character where Age is an example of an independent variable and dependent variable depend on other variable like it can be changed by other components.

Control variable remain constant and show no effect on other variables. It is used to prevent bias in an experiment. An intervening variable or mediator variable  is another variable can modify the relationship between dependent and independent variables.

Thus option B is correct.

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Answer:

Percentage yield=79.14%

Explanation:

Percentage yield=(Actual yield/theoretical yield)*100

Percentage yield=27.7g/35.0g*100

Percentage yield=79.14%

Explanation:

hope this will help you...

The answer the genotypes of Ernest and Denise with certainty. However, we can rule out the options of aa and bo, as these combinations are not possible.

we can say that genotype refers to the genetic makeup of an individual, and is determined by the combination of alleles inherited from each parent. The alleles are the different versions of a gene that can be passed on to offspring. In this case, we are given four possible combinations for Ernest and Denise's genotypes: ab and ab, aa and bo, ao and bo, and ao and bb. We can eliminate the aa and bo combination, as it is not possible to inherit an "a" allele from both parents. However, we cannot determine the genotypes of Ernest and Denise from the remaining options without additional information about the inheritance patterns of the alleles in question.

In conclusion, we need more information to determine the genotypes of Ernest and Denise.

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Each element has an emission spectra because of different electron energy and transitions.

First and foremost, we must comprehend what emission spectra are and why they exist.

The spectrum of frequencies of electromagnetic radiation released by an atom or molecule transitioning from a high energy state to a lower energy state is known as the emission spectrum of a chemical element or chemical compound.

So, as an electron moves from a higher energy state to a lower energy state, it emits an electromagnetic wave in the form of a photon, which is light.

In the case of hydrogen, there is only one electron, and that electron moves from a higher energy state to a ground state, resulting in the emission spectrum of a hydrogen atom.

Now, in the instance of sodium metal or sodium element, there are a total of 11 electrons present, therefore 11 can travel into higher energy states before returning to the ground state. So, the amount of electrons that can be stimulated between this and element is the difference.

Each atom has several different electron transitions, each with a different energy difference. An emission spectrum is a collection of distinct transitions that result in different radiated wavelengths. As a result, the emission spectra of each element differs from one another.

As a result, each element has a distinct emission spectrum.

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Answer:

A dunes windward side is the side where the wind is blowing and pushing material up. A dunes slip face is simply the side without wind. A slipface is usually smoother than a dunes windward side. A collection of dunes is called a dune belt or dune field.

Explanation:

Hope this helps...

Answer:

6.6 moles of NH3

Explanation:

3.3 mol N2 * (2 mol NH3/ 1 mol N2) = 6.6 mol NH3

To balance the chemical equation: CH3(CH2)7CH3(l) + O2(g) → CO2(g) + H2O(g), we need to ensure that the number of atoms of each element is equal on both sides of the equation.

Let's break down the compounds and balance the equation step by step:

1. Balance the carbon atoms:

On the left side, we have 10 carbon atoms in the heptane (CH3(CH2)7CH3). To balance this, we need 10 carbon atoms on the right side. Therefore, we put a coefficient of 10 in front of CO2.

CH3(CH2)7CH3(l) + O2(g) → 10 CO2(g) + H2O(g)

2. Balance the hydrogen atoms:

On the left side, we have 18 hydrogen atoms in the heptane. To balance this, we need 18 hydrogen atoms on the right side. Therefore, we put a coefficient of 9 in front of H2O.

CH3(CH2)7CH3(l) + O2(g) → 10 CO2(g) + 9 H2O(g)

3. Balance the oxygen atoms:

On the left side, we have 2 oxygen atoms in the heptane and the O2 gas contributes 2 oxygen atoms as well, resulting in a total of 4 oxygen atoms. On the right side, we have 20 oxygen atoms in the 10 CO2 molecules and 9 oxygen atoms in the 9 H2O molecules, totaling 29 oxygen atoms. To balance this, we need 29/2 = 14.5 oxygen molecules. Since we cannot have a fractional coefficient, we can multiply the entire equation by 2 to eliminate the fraction.

2 [CH3(CH2)7CH3(l) + O2(g) → 10 CO2(g) + 9 H2O(g)]

This gives us the balanced equation:

2 CH3(CH2)7CH3(l) + 21 O2(g) → 20 CO2(g) + 18 H2O(g)

Therefore, the balanced equation using the smallest possible whole number stoichiometric coefficients for the combustion of heptane is:

2 CH3(CH2)7CH3(l) + 21 O2(g) → 20 CO2(g) + 18 H2O(g)

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