What is the pH of a solution that has the same number of hydrogen ions as hydroxide ions?

The percent yield of a chemical response is the proportion of the real yield to the hypothetical yield, communicated as a rate.

In this case, the hypothetical yield is 150 grams of sodium hydroxide, as calculated by the researcher. The genuine yield is 135 grams of sodium hydroxide, as gotten from the experiment.

The percent yield can be calculated utilizing the equation:

Percent yield = (real yield / hypothetical yield) x 100%

Substituting the values given within the issue, we get:

Percent  yield= (135 / 150) x 100%

Percent yield = 0.9 x 100%

Percent yield = 90%

Hence, the percent yield of the experiment is 90%. This implies that 90% of the hypothetical abdicate was gotten within the test.

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Answer:

According to Coulomb’s law, the electric force between two identical negative charges is inversely proportional to the square of the distance between them. This means that as the distance between the two charges decreases, the electric force between them will increase. Since the charges are both negative, they will repel each other, so as they move closer together, the repulsive force between them will become stronger.

Explanation:

Answer:

H⁺(aq) + H₂O(l) ⇄ H₃O⁺(aq)

Explanation:

According to Brönsted-Lowry acid-base theory, an acid is a substance that donates H⁺. Let's consider the molecular equation showing that benzoic acid is a Brönsted-Lowry acid.

C₆H₅COOH(aq) + H₂O(l) ⇄ C₆H₅COO⁻(aq) + H₃O⁺(aq)

The complete ionic equation includes all the ions and molecular species.

C₆H₅COO⁻(aq) + H⁺(aq) + H₂O(l) ⇄ C₆H₅COO⁻(aq) + H₃O⁺(aq)

The net ionic equation includes only the ions that participate in the reaction and the molecular species.

H⁺(aq) + H₂O(l) ⇄ H₃O⁺(aq)

Fe(OH)₂(s) + O₂(g) +OH → Fe(OH)₃(s) + H₂O balance in basic solution is 4Fe(OH)₂ (s) + O₂(g) + 2H₂O → 4Fe(OH)₃(s)

A basic solution is an aqueous solution containing more OH⁻ ions than H⁺ ion

The unbalanced redox equation is as follows:

Fe(OH)₂(s) + O₂(g) +OH → Fe(OH)₃(s) + H₂O

In the chemical reaction all atoms other than hydrogen and oxygen are balanced and the oxidation number of fe changes from 2 to 3 and the change in the oxidation number is 1 and the oxidation number of fe changes from 0 to -2 and for 2O atoms the change in the oxidation number is 4 and then balance the equation with increase in the oxidation number and with decrease in the oxidation number

Fe(OH)₂(s) and Fe(OH)₃(s) with 4 then,

4Fe(OH)₂(s)+O₂(g) → 4Fe(OH)₃(s)

To balance O atoms, add 2 water molecules on LHS,

4Fe(OH)₂ (s) + O₂(g) + 2H₂O → 4Fe(OH)₃(s)

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Answer:

It is a finite resource. Fossil fuels such as oil, natural gas, and coal are examples of nonrenewable resources. Humans constantly draw on the reserves of these substances while the formation of new supplies takes eons. Renewable resources are the opposite: Their supply replenishes naturally or can be sustained.

Explanation:

Answer:

i) The size of X ion is greater than that of X atom even though both contain the same number of protons because the ion has fewer electrons compared to the atom. When an atom forms an anion (negative ion), it gains electrons, which causes increased electron-electron repulsion. This repulsion causes the electron cloud to expand, and as a result, the ion becomes larger than the neutral atom.

In the case of element X, when it forms an ion with a -3 charge, it will gain 3 more electrons, increasing the total number of electrons to 18. This will cause the size of the X ion to be larger than the neutral X atom.

ii) To determine the compound of X in the -3 oxidation state, we first need to determine the element's identity. We know that X has 15 electrons in total (2 in the K shell, 8 in the L shell, and 5 in the M shell). Therefore, X has an atomic number of 15, which corresponds to phosphorus (P).

Since phosphorus is in the -3 oxidation state, it gains 3 electrons and becomes P^3-. To form a compound, we need a cation that can balance the negative charge. A common example is aluminum (Al), which has a +3 charge (Al^3+). When phosphorus and aluminum combine, they form the compound aluminum phosphide with the formula AlP.

The reaction order and specific reaction rate constant can be determined by performing the kinetics experiment on irreversible polymerization A. Kinetic experiments can be used to investigate the rate and mechanism of chemical reactions. Chemical kinetics is the study of chemical reactions' speed and pathway.

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Yes, the benefits of using nuclear energy outweigh the risks as  nuclear energy has help to solve electricity issues in the United states and other countries.

The benefits of nuclear energy  is that it is one of the cleanest forms of energy. Its carbon footprint is also among the smallest. It is among the solutions to the energy gap. It is crucial to how we respond to greenhouse gas emissions and climate change.

Note that A clean energy source with no emissions is nuclear. It produces energy by fission, which is the splitting of uranium atoms to release energy. With no toxic byproducts created from fossil fuels, the heat from fission is used to create steam that powers a turbine and produces electricity.

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Answer:

The production of nascent hydrogen is associated with the release of high energy. This released energy activates the nascent hydrogen and makes it more energy rich than that of ordinary occurring molecular hydrogen.This form of hydrogen is extremely reactive as it has very little life time.

Explanation:

The mass in grams of water that are produced when 80. g of NaOH react with 73 g of HCl to form 117 g of NaCl and water is 36.0 g.

The equation of the reactions of sodium hydroxide and hydrochloric acid is given below:

NaOH + HCl ---> NaCl + H₂O

The mole ratio is 1 : 1 : 1 : 1

Moles of NaOH that reacted = 80/40

Moles of NaOH that reacted = 2 moles

Moles of HCl that reacted = 73/36.5

Moles of HCl that reacted = 2 moles

Moles of water produced will be 2 moles

Mass of water = 2 * 18 g/mol

Mass of water produced = 36.0 grams.

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The IUPAC name for 2,3,7,9-tetramethyl-5-(1-methylbutyl)decanoic acid is 2,3,7,9-tetramethyl-5-(1-methylbutyl)decanoic acid. It is a carboxylic acid with a molecular formula of C20H40O2 and a molecular mass of 312.54 g/mol. The compound has a melting point range of 70-75°C.

2,3,7,9-tetramethyl-5-(1-methylbutyl)decanoic acid contains a carboxyl group (-COOH), which is the functional group responsible for its acidic properties and solubility in water. The presence of the carboxyl group makes the compound more polar than similar molecules, enhancing its water solubility. Carboxylic acids are also known for their reactivity with bases and ability to undergo esterification reactions.

In summary, 2,3,7,9-tetramethyl-5-(1-methylbutyl)decanoic acid is a carboxylic acid with a unique molecular structure. Its IUPAC name describes the positions and nature of the substituent groups. The presence of the carboxyl group contributes to its polarity, water solubility, acidity, and reactivity with bases and esterification reactions. The compound's characteristics are significant in understanding its properties and potential applications in various chemical reactions and processes.

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The flashbulb contains approximately 0.00291 grams of O₂(g).

The ideal gas law relates the pressure (P), volume (V), temperature (T), and amount of gas (n) through the equation PV = nRT, where R is the universal gas constant. Rearranging this equation to solve for n gives n = PV/RT.

To find the amount of O₂(g) in the flashbulb, we first need to convert the volume to liters and the temperature to Kelvin:

V = 1.70 mL = 0.00170 L

T = 29.0 °C + 273.15 = 302.15 K

We can then use the ideal gas law to calculate the amount of O₂(g):

n = PV/RT

n = (2.30 atm)(0.00170 L)/(0.0821 L·atm/mol·K)(302.15 K)

n = 9.10 × 10⁻⁵ mol O₂

Finally, we can convert from moles to grams using the molar mass of O₂:

m = n × M

m = (9.10 × 10⁻⁵ mol)(32.00 g/mol)

m = 0.00291 g O₂

As a result, the flashbulb contains around 0.00291 grams of O₂(g).

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Answer:

The lungs

Explanation:

Asthma is a disease that affects the airways of your lungs. With asthma, your airways' lining tends to always be in a hypersensitive state characterized by redness and swelling. Causing the airways to swell and, in severe cases, close completely off.

hope this helps, this should also probably be in biology:)

Answer:

The total number of protons and neutrons is the mass number of an atom.

Explanation:

The mass number is made up of the total protons and neutrons in an atom. The mass number represents the mass of the atom in amu (atomic mass units). Electrons are not included in this representation because their mass is negligible (practically 0). The atomic number is made up of the total protons in an atom.

The two structures are first to combine in translation are 3 and 4. Therefore, option C is correct.

The process in which the information encoded in the mRNA is used to direct the sequencing of amino acids, and therefore  it finally synthesizes a protein is called as translation.

In translation the information passed from DNA  to mRNA and turns it into a series of amino acids bound together with peptide bonds.

Translation is translation from one code of nucleotide sequence to another code of amino acid sequence.The two structures are first to combine in translation are 3 and 4.

Thus, option C is correct.

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Answer: b

Explanation:

Answer:

56.96 grams

Explanation:

To find the mass of 1.78 moles of O2, we need to use the molar mass of O2, which is the mass of one mole of O2.

The chemical formula for O2 is O-O or simply O2. The molar mass of O2 is the sum of the atomic masses of two oxygen atoms, which can be found on the periodic table.

The atomic mass of oxygen (O) is approximately 16.00 g/mol. So the molar mass of O2 is:

Molar mass of O2 = 2 x atomic mass of O

= 2 x 16.00 g/mol

= 32.00 g/mol

Therefore, the mass of 1.78 moles of O2 is:

Mass = number of moles × molar mass

= 1.78 mol × 32.00 g/mol

= 56.96 g

So the mass of 1.78 moles of O2 is 56.96 grams.

Answer:

Burn the coal!!!!

Explanation:

Answer :
Burn it

Explanation:

Kinetic energy is the energy of motion. Sometimes, this motion is internal.

When coal is heated, the atoms and molecules inside of the coal can gain a large amount of kinetic energy. This is experienced as heat.

The best way to release all of a chunk of coal's internal kinetic energy is to burn it.

The wavelength of the radio waves is longer than that of the microwaves while microwaves have a larger frequency than  radio waves.

We know that the frequency of a wave refers to the number of cycles that is covered by a wave in a second. We also know that the wavelength has to do with the horizontal distance that is covered by a wave.

Both the radio waves and the microwaves are known to the part of the electromagnetic spectrum. These are the waves that are known to have the same velocity and are able to pass through a vaccum.

Though all  the electromagnetic waves do have the same speed, they do not have the same frequency, wavelength and energy. It is known that the wavelength is inversly related to the frequency of the wave. As such, the greater the wavelength, the smaller the frequency.

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The solubility of\(LaF_3\) in water is 3.04 x 10^-6 mol/L.

The solubility of \(LaF_3\) in water can be determined using the Ksp expression:

\(Ksp = [La^{3+}][F^-]^3\)

Where \([La^{3+}]\)and \([F^-]\) are the molar concentrations of the \(La^{3+}\) and \(F^-\) ions in the solution.

Since each \(LaF_3\) formula unit dissociates into one \(La^{3+}\) ion and three \(F^-\) ions, the molar solubility of \(LaF_3\) can be represented as x. Thus, the molar concentrations of \(La^{3+}\) and \(F^-\) ions in the solution can be written as x and 3x, respectively.

Substituting these values into the Ksp expression gives:

Ksp = x*(3x)^3 = 27x^4

Now, we can solve for x:

x = (Ksp/27)^(1/4)

= (2 x 10^-19 / 27)^(1/4)

= 3.04 x 10^-6 mol/L

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Answer: Burning changes the chemical make up of an object.

Explanation:

A chemical change can be defined as a change in the substance when it combines with other kind of substance to form a new substance. A chemical change can also occur when a substance is broken down into two or more products. These changes cannot be reversed. These changes affect the physical make up of an object. For example, burning as when an object is burned it cannot be transformed into its original form. A wood if burned can be converted into ash, water and carbon dioxide cannot regain its original form after burning so burning brings about chemical change in an object.

Answer:

Explanation:

Here, we want to know the constituent monomers of a polyester

Polyester is a condensation polymer that results from the combination of two different polymers

It is a condensation polymer since molecules of water are expunged from the product

The two different monomers are dicarboxylic acid and a diol (a di hydroxyl alcohol)

Answer:

A

Explanation:

I'm right I took the test

For monosaccharides to cyclize, an alcohol group must attack a carbonyl group, the  carbon of linear pento-ketose has the reactive carbonyl is the carbon number 1.

The monosaccharide is a single unit sugar. Recall that sugars could have cyclic or open chain structures. It is possible for the compound to exists in either the cyclic or the open chain structure.

Now, for monosaccharides to cyclize, an alcohol group must attack a carbonyl group, the  carbon of linear pento-ketose has the reactive carbonyl is the carbon number 1.

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