Among the elements of the main group, the first ionization energy increases
from left to right across a period.
from right to left across a period.
when the atomic radius increases.
down a group.

Potassium citrate (also known as tripotassium citrate) is a potassium salt of citric acid with the molecular formula K3C6H5O7.

The functional group in alcohol is a hydroxyl group (-OH), in phenol, it is a hydroxyl group attached to a benzene ring, and in ether, it is an oxygen atom (-O-) between two alkyl or aryl groups.

Given that the question asks to identify each of the following compounds as an alcohol, a phenol, or an ether. The question seems to be incomplete as there are no options or compounds mentioned. However, given below is a general explanation of the three compounds -Alcohol: Alcohol is a compound that contains a hydroxyl functional group (-OH) that is attached to a carbon atom. The hydroxyl group in alcohol makes it polar and thus, able to form hydrogen bonds. Alcohol is used as a solvent, fuel, and disinfectant. Phenol: Phenol is an aromatic compound that contains a hydroxyl group (-OH) attached to a benzene ring. It is used in the production of detergents, plastics, and pharmaceuticals. Phenol is used as a disinfectant and anesthetic. Ether: Ether is an organic compound that contains an oxygen atom between two alkyl or aryl groups. It is a colorless, volatile, and highly flammable liquid that is used as a solvent and as a starting material in the synthesis of organic compounds. To identify a compound as an alcohol, phenol, or ether, we need to examine the functional groups in the molecule.

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Based on the data shown in the graph, the rate of reaction is directly proportional to the temperature of a reaction.

The speed at which a chemical reaction occurs is called the reaction rate or rate of reaction. The rate of a reaction is proportional to the increase in product concentration per unit time and the decrease in reactant concentration per unit time.

The rate of a reaction is affected by the following:

the temperature of the reaction - the rate of reaction is directly proportional to the temperature of a reaction. Hence, the rate of a reaction increases with an increase in temperature.

presence of a catalyst - the rate of a reaction increases with the addition of a catalyst. A catalyst speeds up the rate of a reaction.

the surface area of the reactants - the rate of a reaction increases with an increase in the surface area of the reactants,

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Answer:

At higher temperatures, chemical reactions occur more quickly.

Explanation:

edmentum

The mass in grams of 4.60 x 10^23 atoms is approximately 9.17 g.

To find the mass in grams of 4.60 x 10^23 atoms, we need to consider the molar mass and Avogadro's number. Avogadro's number (6.022 x 10^23) represents the number of atoms or molecules in one mole of a substance.

First, we need to determine the molar mass of the substance in question. Let's assume we are dealing with a specific element, such as carbon (C), which has a molar mass of approximately 12.01 g/mol.

To calculate the mass in grams, we can use the following formula:

Mass (in grams) = (Number of atoms / Avogadro's number) x Molar mass

Substituting the given values:

Mass (in grams) = (4.60 x 10^23 atoms / 6.022 x 10^23) x 12.01 g/mol

Calculating the expression:

Mass (in grams) = (0.763 mol) x 12.01 g/mol

Mass (in grams) = 9.17 g

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Answer: The energy of a photon that has a wavelength of 965 nm is \(2.06\times 10^{-16}J\)

Explanation:

The relation between energy and wavelength of light is given by Planck's equation, which is:

\(E=\frac{hc}{\lambda}\)

where,

E = energy of the photon =

h = Planck's constant  = \(6.626\times 10^{-34}Js\)

c = speed of light  = \(3\times 10^8m/s\)

\(\lambda\) = wavelength of light  = 965 nm = \(965\times 10^{-9}m\)     \((1nm=10^{-9}m)\)

Putting in the values we get:

\(E=\frac{6.626\times 10^{-34}\times 3\times 10^8m/s}{965\times 10^{-9}m}=2.06\times 10^{-16}J\)

Thus the energy of a photon that has a wavelength of 965 nm is \(2.06\times 10^{-16}J\)

Answer:

A. The balanced chemical equations of the given reactions are shown below:

1. 3Mg(OH)₂ + 2H₃AsO₄ → Mg₃(AsO₄)₂ + 6H₂O

2. NH₄NO₃ → N₂O + 2H₂O

3. AsCl₃ + 3H₂O → H₃AsO₃ + 3HCl

4. 2C₄H₁₀O₂ + 11O₂ → 8CO₂ + 10H₂O

B. Number of moles of Cl₂ needed to react with 3.44 moles of F₂ = 1.14 moles

C. mass of ClF₃ produced = 0.136 * 92.5 = 12.58 g

D. 130.0 g of Cl₂ will produce (130 * 92.5)/71 g of ClF₃ = 169.37 g of ClF₃

Explanation:

A balanced chemical equation occurs when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side.This in accordance with the law of conservation of mass which explains that when a chemical reaction occurs, the mass of the products should be equal to the mass of the reactants.

The balanced chemical equations of the given reactions are shown below:

1. 3Mg(OH)₂ + 2H₃AsO₄ → Mg₃(AsO₄)₂ + 6H₂O

2. NH₄NO₃ → N₂O + 2H₂O

3. AsCl₃ + 3H₂O → H₃AsO₃ + 3HCl

4. 2C₄H₁₀O₂ + 11O₂ → 8CO₂ + 10H₂O

B. The balanced equation of the reaction is: Cl₂ + 3F₂  → 2ClF₃

From the equation above, I mole of Cl₂ reacts with 3 moles of F₂

Number of moles of Cl₂ needed to react with 3.44 moles of F₂ will be = 1 * 3.44/3 = 1.14 moles

C. From the equation above,  3 moles of F₂ reacts to produce 2 moles of ClF₃

0.204 moles of F₂ will produce (2 * 0.204)/3 of ClF₃ = 0.136 moles of ClF₃

Molar mass of ClF₃ = 35.5 + 3 * 19 = 92.5 g/mol

mass of ClF₃ produced = number of moles * molar mass

mass of ClF₃ produced = 0.136 * 92.5 = 12.58 g

D. From the equation of reaction, 1 mole of Cl₂ produces 2 moles of ClF₃

molar mass of Cl₂ = 71 g/mol

71 g of Cl₂ produces 2 * 92.5 g of ClF₃

130.0 g of Cl₂ will produce (130 * 92.5)/71 g of ClF₃ = 169.37 g of ClF₃

Answer:

a PE teacher would be in both catagories  of heath and fitness

Explanation:

Answer: b. 322.5 mL

Explanation:assume constant pressure, then

693/(273.15+45) = v/(273.15-125)

v= 693*148.15/318.15 = 322.7

By using Charles law, the volume will be 322.5 mL

What is Charle's law?

The volume of such an ideal gas is proportional to its absolute temperature at constant pressure, according to Charles' law.

According to Charles law.

\(T_{1} / T_{2} = V_{1} / V_{2}\)

where, T is temperature and V is volume.

A substance or object's volume refers to the amount of 3D space it takes up.

Calculation of volume.

Given data:

V = 693 mL

\(T_{1}\) =-125°C = (273-125) = 148 K

\(T_{2}\) = 45° = (273+45) = 318 K

Put the value of given data in Charles law formula.

148 K/  318 K = V / 693 mL

V = 322.5 mL.

Therefore, by using Charles law the volume of a gas will be 322.5 mL.

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Answer:

8.45 M

Explanation:

To solve this problem we need to keep in mind the definition of molarity:

First we calculate the moles of AlCl₃ in 0.672 L of a 4.78 M solution:

Then we calculate the new molarity of the AlCl₃ solution using that number of moles, which remains the same throughout the evaporation process:

Answer:

Ans: 8.9 NaCl

Explanation:

Ocean water contains 3.5 nacl by mass how much salt can be obtained from 254 g of seawater

Question: Ocean water contains 3.5% NaCl by mass. How much salt can be obtained from 254g of seawater?

sana maka tulong ❣️

Answer:

Electromagnet creates electricity.

Explanation:

Answer: aluminum oxide

Explanation:

Answer:

aluminum oxide

Explanation:

The two layers are part of the thermosphere are  exosphere and ionosphere.

The Exosphere is the topmost layer of the Earth's atmosphere.

and its gradually disappear into the vacuum of space.

It consist two parts that are:

exosphere and ionosphere.

Thus, option "A" is correct, the rest of the option is not a part of thermosphere.

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Answer:

hi hope your doing great the answer is A

Explanation:

its on Edge 2020

hope i helped :)

Answer:

we can't see the diagram

Answer: A B C

Explanation: chapter 34-45 pdf

Answer:

A, B, and C

Explanation:

I took I test and those were the correct answers

Answer:

ATP

Explanation :

Because the energy is released during the process of glycolysis in cellular respiration and then the molecule is captured by the energy carrying molecule which is the ATP (adenosine triphosphate).

Considering both the forward and the reverse directions,  the Bronsted acids in the reaction is  H₂S and CH₃NH₃⁺. The correct option is B.

The chemical reaction is as :

CH₃NH₂(aq) + H₂S(aq) ⇄ CH₃NH₃⁺(aq) + HS⁻(aq)

According to the Bronsted - Lowry theory, acids are the substance that will donates the H⁺ ion or the proton and it will forms the conjugate base.

In the forward reaction, the H₂S donates the proton to the CH₃NH₂.

In the reverse reaction, the CH₃NH₃⁺ will donates the proton to the HS⁻.

Hence, the Bronsted - Lowry acids in the reversible reaction are H₂S and CH₃NH₃⁺. The option B is correct.

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A complete ionic equation shows ions formed from each of the species. It also show the charge on each of the ions.It also shows all reactants as compounds or elements. The ions formed and their charges can only be inferred from this equation.

The net ionic equation shows  the chemical species involve in chemical reaction while the complete ionic equation also involve the spectator ions.

These ions are same in both side of chemical reaction and thus cancels out each other.

Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.  

The net ionic equation state that whether precipitation is occur or not.

If the chemical reaction have no net ionic equation it means all are in aqueous from not precipitation occur.

Balanced Chemical equation:

HClO₂(aq) + NaOH(aq) → H₂O(l) + NaClO₂ (aq)

Ionic equation:

H⁺(aq) + ClO₂⁻(aq) + Na⁺(aq) + OH⁻(aq) → H₂O(l) + Na⁺(aq) + ClO₂⁻ (aq)

Net ionic equation:

H⁺(aq) + OH⁻(aq) → H₂O(l)  

The ClO₂⁻(aq) and Na⁺ (aq) are spectator ions that's why these are not written in net ionic equation.

The water can not be splitted into ions because it is present in liquid form.

Hence, The net ionic equation shows  the chemical species involve in chemical reaction while the complete ionic equation also involve the spectator ions.

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Answer:

boron is the right answer I have studied

Answer:

finding believability

Answer:

1chemical properties

2.chrmistry

3.precipitate

4.endothermic reaction

5.matter

6.physical property

7.chemical change

8.exothermic reaction

9.physical change

The proper numbering is 4, 2, 1, and 3.

The following sequence of actions can be used to describe how an undersea sedimentary rock is formed.

Sedimentary Rock

In a basin, sediments and animal skeletons start to accumulate.

The material that has been deposited starts to become bound together by a glue ingredient brought in by running water, such as calcite or clay. The deposits start to become harder.

The deposits eventually transform into rock that is solid and hard. The new rock is a mixture of several organic and inorganic components.

Existing rocks become sediments as a result of weathering.

What causes sedimentary rocks to form?

Sedimentary rocks are formed when previously existing rocks or pieces of extinct animals accumulate on the surface of the Earth. Sediment that has been buried deeply becomes compacted

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Answer:

The heat Q transferred to cause a temperature change depends on the magnitude of the temperature change, the mass of the system, and the substance and phase involved. (a) The amount of heat transferred is directly proportional to the temperature change.

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The amide group  is the name  given to the –NR2 group.

Amides are organic molecules with the amide functional group.

Amides can be primary, secondary, or tertiary. We call secondary and tertiary amides N-substituted amides.

Amides are named using the suffix -amide. Amides are formed in the reaction between an acyl chloride and either ammonia or a primary amine.

Amides react with aqueous acid to form a carboxylic acid and ammonium salt, and with aqueous alkali to form a carboxylate salt and ammonia.

Thus ,the amide group  is the name  given to the –NR2 group.

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To answer this question, we need to use the ideal gas law equation, which states that PV=nRT, where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of the gas, R is the universal gas constant, and T is the temperature of the gas.

Assuming that the sample is at standard temperature and pressure (STP), which is 0 degrees Celsius and 1 atmosphere of pressure, we can use the molar volume of gas at STP, which is 22.4 liters per mole.
So, if we know the volume of the sample, we can calculate the number of moles of oxygen gas in the sample. Let's say the volume of the sample is 50 liters.
Using the formula, we can rearrange it to solve for n: n = PV/RT. Plugging in the values we have, we get:
n = (1 atm) x (50 L) / [(0.08206 L x atm/mol x K) x (273 K)]
Simplifying this, we get n = 1.83 moles of oxygen gas in the sample.
Therefore, there are about 1.83 moles of oxygen gas in the sample, assuming that it is at STP and has a volume of 50 liters.

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The number of moles in 6.0 × 10²⁴ atoms of oxygen is 5 moles (option D).

The number of moles in a substance can be calculated by dividing the number of atoms of the substance by Avogadro's number as follows:

no of moles = no of atoms ÷ 6.02 × 10²³

According to this question, a sample of oxygen gas is said to contain 6.0 × 10²⁴ atoms of oxygen. The number of moles in this substance can be calculated as follows:

no of moles = 6.0 × 10²⁴ atoms ÷ 6.02 × 10²³

no of moles = 1 × 10¹ = 10 moles of oxygen gas

10 ÷ 2 = 5 moles of oxygen atom

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The process of changing the Gibbs free energy if positive is always nonspontaneous

Gibbs Free Energy is one of the thermodynamic parameters that states whether the continuity of a reaction occurs spontaneously or not spontaneously. The equilibrium composition of a reaction is determined by DG° and K. The value of G will change as the chemical composition of the reactants changes to the products.

Gibbs free energy is denoted by G and expressed in the equation G = H – TS.

Gibbs Helmholtz equation:

ΔG = ΔH − TΔS

This equation is very useful in predicting the spontaneity of a process.

So if the process of changing the Gibbs free energy if it is positive then the process is always nonspontaneous

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