Identify the element present in each star based on the gaps observed in the wavelengths of its light. Refer to this table containing the absorption wavelengths (in nm) of several elements.

Answer:

Electricity is made at a generating station by huge generators. The current is sent through transformers to increase the voltage to push the power long distances.  The electrical charge goes through high-voltage transmission lines that stretch across the country.

During the formation of a water molecule, we focus on the oxygen atom. In hybridization of H2O, the oxygen atom is sp3hybridized.

kcat is a first-order constant for the reaction rate at full enzyme occupancy at saturated substrate concentration. kcat /KM is a second-order constant for reaction rate at mostly free enzyme at very low substrate concentration.

TIM is the 5th enzyme in the eukaryotic glycosylation pathway, which is made up of 10 steps that turn 1 molecule of glucose into 2 molecules of pyruvate. Each step uses 2 ATP molecules and produces 4 ATP molecules, resulting in a net gain of 2 ATP molecules.

Dihydroxyacetone phosphate (DAT) is transformed by triosephosphate (TIM) isomerase to glyceraldehyde (Gd)-3-phosphate and vice versa.

To learn more about an enzyme, refer to the link:

https://brainly.com/question/31385011

#SPJ4

Answer:

The ion will repel the substance because it has lost two electrons.

Explanation:

An ion is a charged specie. We can see from the question that the ion has twelve positive and ten negative particles.

If there are more positive particles than negative particles, then the ion is positively charged.

If the ion is positively charged, it will repel another positively charged particle because like charges repel while opposite charges attract.

Answer:

C. The ion will repel the substance because it has lost two electrons.

The concentration of the original Ba(OH)₂ solution if 15.0 ml solution of Ba(OH)₂ is neutralized with 22.7 ml of 0.200 m HCl is 151.3 mol/dm³

To determine concentration of the original Ba(OH)₂ solution, we must know he balanced chemical equation for the neutralization reaction is:

Ba(OH)₂ + 2HCl → BaCl₂ + 2H₂O

From the equation above, the stoichiometric ratio of Ba(OH)₂ and HCl is 1:2. That means one mole of Ba(OH)₂ reacts with 2 moles of HCl. The balanced chemical equation also shows that the number of moles of HCl used is the same as the number of moles of Ba(OH)₂. Hence:

moles of HCl = 0.200 mol/dm³ × 22.7 dm³ = 4.54 mol

Using the stoichiometric ratio, the moles of Ba(OH)₂ in the solution can be calculated to be:

moles of Ba(OH)₂ = 4.54 mol ÷ 2 = 2.27 mol

The volume of the Ba(OH)₂ solution is 15.0 mL, which is 0.015 dm³. Therefore, the concentration of the original Ba(OH)₂ solution can be calculated as:

concentration = moles/volume= 2.27 mol ÷ 0.015 dm³= 151.3 mol/dm³

Learn more about concentration: https://brainly.com/question/9537498

#SPJ11

The concentration of the original Ba(OH)₂ solution is 0.302 M.

Given data

Volume of Ba(OH)₂ solution used = 15.0 ml

Volume of HCl used = 22.7 ml

Molarity of HCl solution used = 0.200 M

We need to calculate the concentration of Ba(OH)₂ solution, which is not known.Molar ratio of HCl and Ba(OH)₂ in a balanced chemical equation of their neutralization is;

HCl + Ba(OH)₂ → BaCl₂ + 2H₂O

The balanced chemical equation tells us that 1 mole of HCl is required to neutralize 1 mole of Ba(OH)₂.

So, the moles of HCl used in the reaction is;

moles of HCl = molarity × volume (in liters)

moles of HCl = 0.200 M × 0.0227 L = 0.00454 mole

Since one mole of HCl reacts with 1 mole of Ba(OH)₂,

so the number of moles of Ba(OH)₂ used is also equal to 0.00454 mole. Since we know the volume of the Ba(OH)₂ solution used, we can calculate the molarity of the solution as;

molarity = moles of solute / volume of solution in liters

Molarity = 0.00454 / (15.0 / 1000) = 0.302 M

Therefore, the concentration of the original Ba(OH)₂ solution is 0.302 M.

To know more about concentration visit:

https://brainly.com/question/3045247

#SPJ11

To investigate the effects of anions on pH, option d- Liam should choose salts that have acidic or basic anions.

This is because the anions in a salt can react with water to produce either an acidic or basic solution. The choice of cation is not as important, as neutral cations will not affect the pH of the solution. Therefore, option (d) is the most appropriate choice for Liam.

To elaborate further, when a salt is dissolved in water, it dissociates into its respective cation and anion. The anion, in particular, can interact with water to form either an acidic or basic solution. For example, chloride ions (Cl-) do not have any acidic or basic properties, and therefore, will not affect the pH of a solution.

However, nitrate ions (NO) are basic anions and can hydrolyze to form hydroxide ions (OH-) and increase the pH of the solution.

learn more about pH here:

https://brainly.com/question/26856926

#SPJ4

Answer:

The melting point of a solid is the same as the freezing point of the liquid. At that temperature, the solid and liquid states of the substance are in equilibrium.

Pure gold: 1063

Pure silver: 961

Answer:

solid liquid and gas

Explanation:

Answer: Forms: Liquid water, solid water (ice) and gaseous water (water vapor)

Explanation:

Obviously liquid water comes from the sink, ice can be found in the freezer, and water vapor comes from boiling water, it is always in the air around us.

Liquid water is used for hydration or for food preparation. Ice is used to cool things down or in drinks, and water vapor isn't really used by humans. Rather, it serves as a natural greenhouse gas.

The chemical reaction between hydrogen and oxygen in rocket engines and the reaction that results in carbon dioxide emissions are related by the process of combustion. Both reactions involve the oxidation of a fuel source, releasing energy in the form of heat and light. However, they differ in their end products. Hydrogen and oxygen combustion produces water vapor, which is clean, while hydrocarbon combustion results in carbon dioxide emissions and other pollutants, contributing to climate change and air pollution.

The chemical reaction between hydrogen and oxygen in rocket engines involves the combustion of hydrogen fuel, resulting in the formation of water vapor (H2O). On the other hand, the chemical reaction that results in carbon dioxide emissions typically refers to the combustion of hydrocarbon fuels, such as gasoline or natural gas, which contain carbon atoms in addition to hydrogen.

In both reactions, combustion occurs, which is an exothermic reaction that releases energy in the form of heat and light. The combustion reactions involve the reaction of a fuel (hydrogen or hydrocarbon) with oxygen as the oxidizing agent.

Similarities:

1. Both reactions involve the oxidation of a fuel. In both cases, oxygen acts as the oxidizing agent, accepting electrons from the fuel molecules.

2. Both reactions release energy in the form of heat and light.

3. Both reactions involve the breaking of chemical bonds in the fuel and the formation of new bonds with oxygen atoms.

Differences:

1. The hydrogen and oxygen reaction produces water vapor (H2O), which is a clean and environmentally friendly byproduct. On the other hand, the combustion of hydrocarbon fuels produces carbon dioxide (CO2), a greenhouse gas that contributes to climate change.

2. The reaction between hydrogen and oxygen is a direct combination reaction, while the combustion of hydrocarbon fuels involves a more complex series of reactions, including the breaking of carbon-carbon and carbon-hydrogen bonds.

3. The combustion of hydrocarbon fuels releases carbon monoxide (CO), nitrogen oxides (NOx), and other pollutants in addition to carbon dioxide, depending on the specific fuel and conditions of combustion.

Overall, while both reactions involve combustion and the release of energy, the hydrogen and oxygen reaction is cleaner and results in the formation of water vapor, while the combustion of hydrocarbon fuels produces carbon dioxide emissions and other pollutants, making it a contributor to climate change and air pollution.

For more such information on: chemical reaction

https://brainly.com/question/11231920

#SPJ8

Molarity of NaCl solution = 0.5 M Molarity or Concentration = Moles of solute / Volume of solution 0.5 M solutions of Sodium chloride means 0.5 moles of NaCl in 1 Litre of Sodium chloride solution.   In order to decrease the concentration of the solution more water should be added to the solution.

What is Molarity?

Molarity or molar concentration is the number of moles of solute per liter of solution, which can be calculated using the following equation:

\(\text{Molarity}= \dfrac{\text{mol solute}}{\text{L of solution}}\)

​

Molar concentration can be used to convert between the mass or moles of solute and the volume of the solution.

Learn more about molarity here:

https://brainly.com/question/8732513?referrer=searchResults

#SPJ4

The reaction between acids in acetic acid in vinegar reacts with bases of calcium carbonate to form calcium acetate salts

Calcium can form deposits on the surface of equipment in contact with water in the form of CaCO₃

vinegar which contains acetic acid can break the bonds between Calcium and Carbonate that form calcium acetate

CaCO₃ + 2CH₃COOH = Ca(CH₃COO)₂ + H₂CO₃

CaCO₃ + 2CH₃COOH = Ca(CH₃COO)₂ + H₂O + CO₂

The freezing point of the solution is -11.8 °C.

The boiling point of the solution is 103.31 °C.

To determine the freezing point of the solution, we can use the equation:

ΔTf = Kf * m

where:

ΔTf is the freezing point depression,

Kf is the cryoscopic constant (for water, Kf = 1.86 °C/m),

m is the molality of the solution (moles of solute per kilogram of solvent).

First, let's calculate the molality (m) of the solution:

Molar mass of ethylene glycol (C2H6O2):

C = 12.01 g/mol

H = 1.01 g/mol (x 6) = 6.06 g/mol

O = 16.00 g/mol (x 2) = 32.00 g/mol

Total molar mass = 12.01 g/mol + 6.06 g/mol + 32.00 g/mol = 50.07 g/mol

Number of moles of ethylene glycol (C2H6O2) = mass / molar mass

Number of moles = 30.8 g / 50.07 g/mol = 0.615 mol

Mass of water = volume x density = 96.6 mL x 1.00 g/mL = 96.6 g

Now, let's calculate the molality:

Molality (m) = moles of solute / mass of solvent (in kg)

Molality = 0.615 mol / 0.0966 kg = 6.36 mol/kg

Now we can calculate the freezing point depression (ΔTf):

ΔTf = Kf * m

ΔTf = 1.86 °C/m * 6.36 mol/kg = 11.8 °C

To find the freezing point of the solution, subtract the freezing point depression from the freezing point of pure water (0 °C):

Freezing point = 0 °C - 11.8 °C = -11.8 °C

To determine the boiling point of the solution, we can use the equation:

ΔTb = Kb * m

where:

ΔTb is the boiling point elevation,

Kb is the ebullioscopic constant (for water, Kb = 0.52 °C/m),

m is the molality of the solution (same value as calculated before: 6.36 mol/kg).

ΔTb = 0.52 °C/m * 6.36 mol/kg = 3.31 °C

To find the boiling point of the solution, add the boiling point elevation to the boiling point of pure water (100 °C):

Boiling point = 100 °C + 3.31 °C = 103.31 °C

To know more about ethylene glycol

https://brainly.com/question/32452413

#SPJ11

Oxides contain four types of charges: fixed charges (Qf), trapped charges (Qt), interface charges (Qit), and mobile ions (Qm).C-V graphs are used to assess the electrical characteristics of a dielectric interface. C is the capacitance of the oxide layer, and V is the applied voltage on the metal electrode that forms the oxide layer.

As the capacitance of the oxide layer changes with the applied voltage, the C-V graph shows the capacitance change. The graph below shows how each feature appears in a C-V graph.
[Blank]Fixed charge (Qf)Fixed charges are immobile, so they can only interact with the applied voltage via their electrostatic effect. As a result, when the applied voltage is greater than a specific threshold voltage (VT), the fixed charges create a dip in the C-V graph.

[Blank]Mobile ions (Qm)Mobile ions are also present in the oxide layer, and they can move in response to an electrical field. The mobile ions influence the electrostatic potential in the oxide layer, which alters the capacitance. Because of this influence, the C-V graph has a tiny dip before the hump known as the tail.

To know more about electrical visit:

https://brainly.com/question/31173598

#SPJ11

The new temperature of the nitrogen gas after 26.6 kJ of heat is added is approximately 367.97 K.

To find the new temperature, we can use the ideal gas law (PV=nRT) and the specific heat capacity of nitrogen gas (Cp = 29 J/mol K). First, determine the number of moles (n) of nitrogen gas using the initial conditions: n = PV/RT. Then, calculate the amount of heat added in terms of moles: q = nCpΔT.

Rearrange this equation to find ΔT: ΔT = q/(nCp). Add this value to the initial temperature (T_initial) to find the new temperature: T_new = T_initial + ΔT. Using the given values and the specific heat capacity of nitrogen, the new temperature is approximately 367.97 K.

Learn more about ideal gas here:

https://brainly.com/question/30236490

#SPJ11

Answer:

chemical synthesis or chemical property

Explanation:

Answer :

Charles's Law : It is defined as the volume is directly proportional to the temperature of the gas at constant pressure and number of moles.

Mathematically,

\(V\propto T\)

                                Boiling water bath        Cool bath 1       Cool bath 2

Temperature (⁰C)                  99                              17                       2

Temperature (K)(T)    273+99=372             273+17=290      273+2=275

Volume of water                  0.0                             27.0                34.0

in cool flask (mL)

Volume of water=              135.8                           135.8               135.8

Air in flask (mL)

Volume of air                    135.8                           108.8               101.8

in cool flask (V)

\(\frac{V}{T}\)                                \(\frac{135.8}{372}=0.365\)             \(\frac{108.8}{290}=0.375\)         \(\frac{101.8}{275}=0.370\)

The graph volume versus temperature for a gas is shown below.

Answer:

Graham's law states that the rate of effusion or of diffusion of a gas is inversely proportional to the square root of its molecular weight. So, rate of diffusion of hydrogen gas is four times faster than oxygen gas.

Explanation:

Answer:

Rate of diffusion of hydrogen is higher than other gases because mass of hydrogen is very small and it diffuses easily.

Explanation:

The pH of the resulting mixture is approximately 3.86.

Molarity of NaOH = 0.1M

Volume of NaOH = 100ml

Molarity of lactic acid = 0.2M

Volume of lactic acid = 55ml

pKa of lactic acid = 4.1

First, calculate the moles of lactic acid.

Number of moles of lactic acid = Molarity × volume= 0.2 × (55/1000)= 0.011 mol

Next, let's calculate the moles of NaOH.

Number of moles of NaOH = Molarity × volume= 0.1 × (100/1000)= 0.01 mol

NaOH reacts with lactic acid in a 1:1 ratio. Hence, the amount of NaOH reacting with lactic acid will also be 0.011mol.

The amount of NaOH remaining after the reaction is (0.01-0.011)= -0.001 mol.

However, as the volume of NaOH is much larger than lactic acid, the concentration of hydroxide ions produced by the excess NaOH is negligible. Hence we can ignore the remaining NaOH.

Now let's calculate the amount of lactic acid remaining.

Number of moles of lactic acid remaining = Number of moles of lactic acid - Number of moles of NaOH reacting= 0.011 - 0.011= 0 mol

This means all the lactic acid has reacted. Let the concentration of lactate ion formed be x. Hence, the concentration of lactic acid that has been converted to lactate ion is also x. Hence, the equilibrium will be:

HC3H5O3 (lactic acid) + H2O ⇌ H3O+ (aq) + C3H5O3- (lactate ion)

Initial concentration (M) 0.2

Change in concentration (M) -x

Equilibrium concentration (M) (0.2-x)

Using the expression for Ka of lactic acid we can write,

Ka = ([H3O+][C3H5O3-])/[HC3H5O3]... (i)

Substitute the values in equation (i),

Ka = (x^2)/(0.2-x)=10^-4.1

Solving for x gives, x = 0.0085M

Substituting x in (0.2-x) gives the final concentration of lactic acid= 0.1915M

Now let's calculate the pH.

pH = pKa + log [lactate ion]/[lactic acid]= 4.1 + log (0.0085/0.1915)= 3.86

Therefore, the pH of the resulting mixture is approximately 3.86.

Learn more about pH: https://brainly.com/question/22390063

#SPJ11

The predominant intermolecular force in petroleum ether is London dispersion forces.

Petroleum ether is a hydrocarbon mixture, and hydrocarbons are nonpolar molecules. Additionally, they do not contain hydrogen atoms bonded to highly electronegative atoms such as oxygen, nitrogen, or fluorine, so they do not exhibit hydrogen bonding.

The only intermolecular force present in petroleum ether is London dispersion forces, which are temporary, induced dipole moments that occur due to the random movement of electrons within the molecules.

See more about intermolecular force at https://brainly.com/question/2193457.

#SPJ11

Answer:

1

Explanation:

Answer:

Aluminum, because it is in group 13 and has three valence electrons.

The formation of molecule can easily be shown by drawing Lewis dot structure. Since  atom's Lewis dot structure has three dots. So Option A is correct option.

Lewis dot structure is a way to represent the valence electron of an element in the form of dot. These are mainly beneficial in understanding the chemical formula of covalent compound.

It is given that the Lewis dot structure of molecule contain only 3 electron. That means that element contains 3 electrons in its valence shell.

Aluminum's electronic configuration is 2,8,3

Lithium's electronic configuration is 2,1

Magnesium's has electronic configuration as 2,8,2

Potassium's electronic configuration is 2,8,8,1

Thus Aluminum is the only element that has 3 electron in its outermost shell So, Option A is correct option

To learn more about Lewis dot structure,  here:

https://brainly.com/question/20300458

#SPJ2

By the use of the Boyle's law as we can see in the solution below, the pressure is  51.5 units.

Boyle's law is a principle in physics that describes the relationship between the pressure and volume of a gas at a constant temperature.

It states that the pressure of a gas is inversely proportional to its volume, meaning that if the volume of a gas is decreased, the pressure will increase proportionally, and if the volume is increased, the pressure will decrease proportionally.

Using the Boyles law;

P1V1 = P2V2

P2 = P1V1/V2

P2 = 12.8 * 40.2/10

P2 = 51.5

Learn more about the Boyle's law:https://brainly.com/question/30367133

#SPJ1

Answer

Mass of (H30)2CrO = 38 g

Explanation

Given:

Mass of Sn(CrO4)2 = 43.4 g

Mass of (H3O)2HPO4 = 35.2 g

Required: The mass of (H30)2CrO4 that will be produced

Solution:

Calculate the possible mass that could be produced by each reactant, so as to determine the limiting reagent. Use stoichiometry.

For Sn(CrO4)2:

For (H3O)2HPO4

Sn(CrO4)2 will produce less (H30)2CrO4 therefore, Sn(CrO4)2 is the limiting reagent.

Answer:

1. Empirical formula => CH2O2

2. Molecular formula => C2H4O4

Explanation:

From the question given above, the following data were obtained:

Carbon (C) = 26.4 %

Hydrogen (H) = 3.3 %

Oxygen (O) = 70.3 %

Molar mass of compound = 91.0 g/mol

Empirical formula =..?

Molecular formula =..?

1. Determination of the empirical formula of the compound.

C = 26.4 %

H = 3.3 %

O = 70.3 %

Divide by their molar mass

C = 26.4 /12 = 2.2

H = 3.3 /1 = 3.3

O = 70.3 /16 = 4.39

Divide by the smallest

C = 2.2 /2.2 = 1

H = 3.3 /2.2 = 2

O = 4.39 /2.2 = 2

Empirical formula => CH2O2

2. Determination of the molecular formula of the compound.

Molar mass of compound = 91.0 g/mol

Empirical formula => CH2O2

Molecular formula => [CH2O2]n

We shall determine the value of n as follow:

[CH2O2]n = 91

[12 + (2×1) + (2×16)]n = 91

[12 + 2 + 32]n = 91

46n = 91

Divide both side by 46

n = 91/46

n = 2

Molecular formula => [CH2O2]n

Molecular formula => C2H4O4

In the given case where 26.4 % Carbon , 3.3 % Hydrogen , 70.3 % Oxygen , and Molar Mass: 91.0 g/mol the:

Given:

Carbon (C) = 26.4 %  

Hydrogen (H) = 3.3 %  

Oxygen (O) = 70.3 %  

Molar mass of compound = 91.0 g/mol  

Determination of the empirical formula of the compound:-

The ratio is CHO = 1 : 1.5 : 2

multiply with 2 to find correct and complete number ratio

C = 1 × 2 = 2

H = 1.5 × 2 = 3

O = 2 × 2 = 4

Thus,  the Empirical formula => \(C_2H_3O_4\)

Mass × n = molar mass

12 × 2 + 1 × 3 + 16 × 4 = 91

24 + 3 + 64 = 91

91 = 91

Thus moles are 1 which means

molecular formula =  (\(C_2H_3O_4\))\(_1\)

Thus, here in the given data:

Molecular Formula: (\(C_2H_3O_4\))\(_1\)

Learn more:

https://brainly.com/question/15960587

Answer:

third

Explanation:

because it's the right distance for life to utilise the sun's power energy

Answer:

8.35 US lbs.

You don't need to know density for this problem... although it is another way to get the same solution.

Love is a beautiful thing, all of us deserves to be loved. Are you looking for a partner who is a Christian? worry no more, here at christianCafe

https://mb102.com/lnk.asp?o=9570&c=918277&a=631369&k=EC224B58A563E0AB2D65649CF8939973&l=9133

You get to interact with different partners, who knows, it could be the start of the rest you life. Sign up now

https://mb102.com/lnk.asp?o=9570&c=918277&a=631369&k=EC224B58A563E0AB2D65649CF8939973&l=9133Answer: