How much 5.70 m naoh must be added to 670.0 ml of a buffer that is 0.0200 m acetic acid and 0.0260 m sodium acetate to raise the ph to 5.75?

Answer:

Option 4 is the correct answer

A Ball-and-stick Model

Explanation:

The given diagram shows the model of A Ball And Stick Model.

As you can see these are balls and they are connected with those sticks.

Explanation:

fgIf the piston moves so as to increase the pressure of the gas to 2.94 atm, ... new volume of the cylinder? ... A gas has a pressure of 699.0 mm Hg at 40.0°C. What is the temperature (in C) ...

The largemouth bass if there was a drastic decline in the populations of ducks and leeches as they are not primary food sources and at the top of the food chain, the impact would be minimal

The largemouth bass is a carnivorous freshwater gamefish in the Centrarchidae family and a species of black bass native to the eastern and central united states and southeastern Canada and northern Mexico but widely introduced elsewhere that's why the largemouth bass eat a variety of foods, including fish, insects, frogs, and crayfish and eat mice, moles, snakes, leeches, and baby ducklings so when drastic decline in the populations of ducks and leeches so no its not because they are not primary food sources and at the top of the food chain, the impact would be minimal

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The ribosome expels uncharged tRNA molecules from the E site. This assertion is a. True. The tRNA molecule with no amino acid attached will leave the ribosomal complex at the E site (exit site) of the ribosome.

All cells include ribosomes, which are large molecules responsible for the synthesis of biological proteins. To create polypeptide chains, ribosomes combine amino acids in the order dictated by the messenger RNA molecules' codons. The short and big ribosomal subunits are the two main parts of ribosomes.

Decoding the message and creating peptide bonds are the two main jobs of ribosomes. The ribosomal subunits are two big, unequal-sized ribonucleoprotein particles (RNPs) that carry out these two functions. Each subunit is made up of several ribosomal proteins and one or more ribosomal RNAs (rRNAs) (r-proteins).

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Answer:

Explanation:

Here, we want to identify the reducing and the oxidizing agent

The reducing agent is the one that undergoes oxidation while the oxidizing agent is the one that undergoes reduction

While oxidation refers to the loss of electrons, reduction is the gain of electrons

By looking at the componets that gained or loss electrons,we can idenify the oxidizing or reducing agent

From what we have in the guestion, sulfuric acid is the oxidiszing agent as it is the one that undergoes reduction.

Answer:

what? Explain to meh. who is tom macdonald

Answer:

432

Explanation:

Answer:

blizzard because it is cold and rainy all the time.

Explanation:

Blizzard is a natural disaster that is least likely to occur in Maryland.

Maryland was a home to 7th state in united states. Maryland’s most common natural disasters include :

Maryland has been impacted by several floods. Hurricane season begins one June 1st. Different storms are seen in Maryland.  There are two types of disaster manmade and natural. Floods, volcanoes are natural disasters.

Maryland has vast variety of tropological features which include lakes, rivers, mountains and pine forests. Blizzard is a dangerous weather event, it is a snowfall.

Therefore, Blizzard is a natural disaster that is least likely to occur in Maryland.

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Answer:

The answer is: The Earth rotates on its axis.

We need ti find how many elements there are in the first period and what are these.

To know what is the first period we must use that

Seeing the periodic table, the first row has two elements.

We can see that these elements are H ( hydrogen ) and He ( helium ).

ANSWER:

Firs period in the periodic table has two elements and they are called hydrogen and helium.

Answer:

A

Explanation:

By nature, a hybrid has one dominante allele and one recessive allele

20,000 is the correct answer

What is empirical formula ?

The empirical formula of a chemical compound is the simplest ratio of the number of atoms of each element present in a compound. It represents the smallest whole number ratio of the elements in a compound and gives an indication of the relative proportions of the elements. The empirical formula is not necessarily the same as the molecular formula, which represents the actual number of atoms in a molecule. The molecular formula may be a multiple of the empirical formula and can be determined by analyzing the compound's molecular weight.

Multiply each by 20,000, then we have

C: 2.48925 x 20,000 = 49,785

H: 3.9901 x 20,000 = 79,802

O: 1.000 x 20,000 = 20,000

Multiply each element by in order to have them all reach the smallest whole number will be 20,000.

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Answer: The answer is 2

Explanation:

7. The major product/s that form/s during the nitration of benzenesulfonic acid are as follows:

Explanation:
Nitration of benzenesulfonic acid results in the substitution of one or more hydrogen atoms with the nitro group (-NO2). The sulfonic acid (-SO3H) group is a strong electron-withdrawing group that directs the incoming nitronium ion (-NO2+) to the ortho and para positions of the ring.
The major product formed during the nitration of benzenesulfonic acid is a mixture of ortho and para-nitrobenzenesulfonic acid, where the sulfonic acid group (-SO3H) directs the nitration to the ortho and para positions on the benzene ring. The nitration reaction is carried out using a mixture of nitric acid and sulfuric acid.
Mechanism of nitration of benzenesulfonic acid:
The nitration of benzenesulfonic acid involves a two-step mechanism, which is as follows:
Step 1: The nitronium ion is generated by the reaction between nitric acid and sulfuric acid.
HNO3 + H2SO4 → NO2+ + HSO4- + H2O
Step 2: The nitronium ion then attacks the benzene ring in benzenesulfonic acid, leading to the substitution of a hydrogen atom with the nitro group (-NO2).
C6H5SO3H + NO2+ → C6H4(NO2)SO3H + H+

8. The given scheme shown will lead to the formation of which major product from benzene is shown below
The given scheme shows Friedel-Crafts acylation of benzene. Friedel-Crafts acylation is a reaction between an acyl halide (such as benzoyl chloride) and an aromatic compound (such as benzene), in the presence of a Lewis acid catalyst (such as aluminum chloride).
In this reaction, a hydrogen atom on the benzene ring is substituted with an acyl group (-COR). The acylation reaction takes place at the ortho and para positions of the benzene ring because the acylium ion is an electron-deficient species and is attracted to the electron-rich ortho and para positions.
The major product formed during the Friedel-Crafts acylation of benzene is ortho and para-substituted product, 4-methylbenzophenone. The reaction is shown below:
Hence, the major product formed from benzene is 4-methylbenzophenone.

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The approximately 4 moles of gas in the container at standard temperature (ST) with a volume of 99.2 L.

To determine the number of moles of gas in a container at standard temperature (ST) with a volume of 99.2 L, we need to use the ideal gas law equation:

PV = nRT

Where:

P = pressure (atmospheres)

V = volume (liters)

n = number of moles

R = ideal gas constant (0.0821 L·atm/mol·K)

T = temperature (Kelvin)

At standard temperature (ST), the temperature is 273.15 K.

Assuming the pressure is also at standard conditions (1 atm), we can rearrange the ideal gas law equation to solve for the number of moles:

n = PV / RT

Substituting the given values:

P = 1 atm

V = 99.2 L

R = 0.0821 L·atm/mol·K

T = 273.15 K

n = (1 atm) × (99.2 L) / ((0.0821 L·atm/mol·K) × (273.15 K))

Simplifying the calculation:

n ≈ 4 moles

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Approximately 0.628 grams of aluminum are required to react with 35 ml of 2.0 M hydrochloric acid.

To determine the grams of aluminum required to react with 35 ml of 2.0 M hydrochloric acid (HCl), we need to consider the stoichiometry of the balanced chemical equation.

The molar ratio between HCl and aluminum (Al) in the balanced equation is 6:2, which means 6 moles of HCl react with 2 moles of aluminum. From the given concentration of HCl (2.0 M) and volume (35 ml), we can calculate the moles of HCl:

moles of HCl = concentration × volume

              = 2.0 M × 0.035 L

              = 0.07 moles

Using the stoichiometry ratio, we can determine the moles of aluminum required:

moles of Al = (2/6) × moles of HCl

                = (2/6) × 0.07

                = 0.0233 moles

Finally, we can convert the moles of aluminum to grams using its molar mass (26.98 g/mol):

grams of Al = moles of Al × molar mass

              = 0.0233 mol × 26.98 g/mol

              = 0.628 g

Therefore, approximately 0.628 grams of aluminum are required to react with 35 ml of 2.0 M hydrochloric acid.

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Answer:

1.2mol

Explanation:

Determine the g/mol of CO2

O - 16g/mol (based on my data booklet)

C - 12.01g/mol (based on my data booklet)

Then add these values up for the g/mol of CO2

16+16+12.01= 44.01g/mol

Then write out the formula

mol = mass/molar mass

n= m/M

n = 55/44.01

n= 1.24971597

and depending on what significant digits you need (based on info, ill do it to 2 terms)

n = 1.2 mol

Molar mass is defined as the mass in grams of one mole of a substance. 1.2 molecules of CO2 are there in 55 grams of CO2.

The term molar mass is defined as the mass of a chemical compound divided by its amount-of-substance measured in moles. It is represented by the symbol "M". The units of molar mass are grams per mole, abbreviated as g/mol.

The weight of one mole of a sample is defined as its molar mass. To calculate a molecule's molecular mass, multiply the subscript by the atomic mass of each element in the molecule, then add the masses of all the elements in the molecule.

Molar mass of Oxygen - 16g/mol

Molar mass of Carbon - 12.01g/mol

Then add these values up for the g/mol of CO₂

Molar mass of CO₂ = 16+16+12.01

= 44.01g/mol

Then,

The number of mole = mass / molar mass

n = m / M

n = 55 / 44.01

n = 1.24971597

n = 1.2 mole

Thus, 1.2 molecules of CO2 are there in 55 grams of CO2.

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Answer: sorry I'm late I was looking for an answer but the right answer is D. It is less than 1.4 million years old

Explanation:

I was looking for an answer and I took the test and got this right

Stay safe and hope this helps ^^

Answer:D.It is less than 1.4 million years old

Explanation:

it is approved from apec

Answer:

K, Rb and Cs

Explanation:

Answer:

krypton, bromine, and argon

For 2g of magnesium: 3.31 g

For 10g of magnesium: 16.59 g

For 4kg of magnesium: 6.63 kg

The balanced chemical equation for the reaction is:

2 Mg + O2 → 2 MgO

The balanced chemical equation for the reaction is:

2 Mg + O2 → 2 MgO

From the equation, we can see that 2 moles of magnesium react with 1 mole of oxygen to produce 2 moles of magnesium oxide. Therefore, we can calculate the amount of magnesium oxide produced for each given mass of magnesium as follows:

Moles of Mg = mass / molar mass = 2g / 24.31 g/mol = 0.0823 mol

Moles of MgO produced = Moles of Mg x (2 moles MgO / 2 moles Mg) = 0.0823 mol x 1 = 0.0823 mol

Mass of MgO produced = Moles of MgO produced x molar mass of MgO = 0.0823 mol x 40.31 g/mol = 3.31 g

Moles of Mg = mass / molar mass = 10g / 24.31 g/mol = 0.4116 mol

Moles of MgO produced = Moles of Mg x (2 moles MgO / 2 moles Mg) = 0.4116 mol x 1 = 0.4116 mol

Mass of MgO produced = Moles of MgO produced x molar mass of MgO = 0.4116 mol x 40.31 g/mol = 16.59 g

Moles of Mg = mass / molar mass = 4000g / 24.31 g/mol = 164.47 mol

Moles of MgO produced = Moles of Mg x (2 moles MgO / 2 moles Mg) = 164.47 mol x 1 = 164.47 mol

Mass of MgO produced = Moles of MgO produced x molar mass of MgO = 164.47 mol x 40.31 g/mol = 6626.95 g or 6.63 kg

Calculation of Formula of Iron Oxide Produced:

According to the given information, 0.4 moles of iron reacts with 0.3 moles of oxygen gas. To determine the formula of the iron oxide produced, we need to first balance the chemical equation.

Fe + O2 → FeO

From the balanced equation, we can see that 1 mole of iron reacts with 1 mole of oxygen to produce 1 mole of iron oxide. Therefore, the ratio of moles of iron to moles of oxygen in the reaction is 1:1.

To do this, we can calculate the theoretical amount of moles of oxygen required to react completely with 0.4 moles of iron:

0.4 mol Fe × (1 mol O2 / 1 mol Fe) = 0.4 mol O2

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Answer:

0.172 M

Explanation:

In a conducting metal, the valence electrons are delocalized and can  The conduction band is partially filled with electrons, allowing them to move and conduct electricity. The valence band, which is formed by the lower energy atomic orbitals, is either completely filled or partially filled.

A semiconductor has a smaller energy gap between the valence band and the conduction band compared to an insulator. This smaller energy gap allows some electrons to move from the valence band to the conduction band when energy is supplied. In a semiconductor, the valence band is usually filled, while the conduction band is either empty or only partially filled.

In an insulator, the energy gap between the valence band and the conduction band is larger than that of a semiconductor. This large energy gap makes it difficult for electrons to move from the valence band to the conduction band, resulting in very limited conductivity.

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The limiting reactant, O₂, forms 2.7 mole Al₂O₃. Therefore, the mass of Al₂O₃ is 280 g.

The term mole (M) is defined as the amount of substance in a system which include as many elementary entities as there are atoms present in it. It is denoted by the symbol “mol”. The word mole is coming from the Latin word moles, which means “a mass”.

Molar Mass of Al₂O₃ = 101.96 g/mol

2.7 mole Al₂O₃          101.96 g

------------------------  x  -------------------    

             X                       1 mole

= 280 g Al₂O₃

Thus, The limiting reactant, O₂, forms 2.7 mole Al₂O₃. Therefore, the mass of Al₂O₃ is 280 g.

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Answer:

B

Explanation:

cool air never rises so not A

C would mean its getting warmer

and heat flows from warm to cool so not D

we are left with B

if my anwser helps please mark as brainliest.

The difference in binding energy per nucleon between 23/11 Na and 23/12 Mg can be calculated by finding the total binding energy for each isobar and dividing it by the respective number of nucleons.

To calculate the difference in binding energy per nucleon between the isobars 23/11 Na and 23/12 Mg, we need to find the total binding energy for each isobar and then divide it by the respective number of nucleons.

The atomic mass of 23/11 Na is 23, which means it has 23 nucleons (protons and neutrons). The atomic number is 11, indicating it has 11 protons.

The atomic mass of 23/12 Mg is also 23, so it has 23 nucleons. However, the atomic number is 12, indicating it has 12 protons.

We can use the equation:

Binding Energy per Nucleon = (Total Binding Energy) / (Number of Nucleons)

To find the total binding energy, we can consult a table or use an approximate average value. Let's assume the average binding energy per nucleon for both elements is 8.5 MeV (million electron volts).

For 23/11 Na:

Binding Energy per Nucleon = (Total Binding Energy of Na) / (Number of Nucleons)

                         = (8.5 MeV) / (23 nucleons)

For 23/12 Mg:

Binding Energy per Nucleon = (Total Binding Energy of Mg) / (Number of Nucleons)

                         = (8.5 MeV) / (23 nucleons)

The difference in binding energy per nucleon can then be calculated by subtracting the value for Na from the value for Mg.

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(a) First, we need to write the combustion reaction for ethanol (CH3CH2OH)

CH3CH2OH + O2 → CO2 + H2O

Then, we need to balance this equation. To do that, remember to start with C, then move on to H and finally balanced the amount of O:

CH3CH2OH + 3 O2 → 2 CO2 + 3 H2O

(b) Since this is a reaction that realeases heat (726.7 kJ /mol of ethanol), we know that is an exothermic reaction and the general scope of an enthalpy diagram would be like this:

Where, for the combustion of ethanol, the reactants would be CH3CH2OH + O2, the products would be CO2 + H2O, and ΔH would be -726.7 kJ/mol

Entropy of the environment and the system (ethanol and oxygen being burned) both rise during the flambeating process. The second law of thermodynamics is in agreement with this increase in entropy.

When a combustion reaction takes place, the system's entropy always goes up. Combustion processes must be spontaneous because of the interaction between an increase in entropy and a decrease in energy.

A fire is exothermic, which means that it loses energy as heat is released into the surrounding space. As the bulk of a fire's byproducts are gases, such as carbon dioxide and water vapour, the system's entropy increases during the majority of combustion episodes.

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Answer: The chocolate-chip batter solution formed by mixing pancake batter and chocolate chips is an example of a suspension.

Explanation: A suspension is a heterogeneous mixture in which small solid particles are dispersed in a liquid.

Due to the fact that the particles are not uniformly distributed, they can settle to the bottom of the container when left undisturbed for an extended period of time.

Suspensions can be separated using various techniques, such as filtration or centrifugation.Suspensions can be found in a variety of natural and artificial contexts.

For example, blood is a suspension of blood cells in plasma, while orange juice is a suspension of pulp in liquid.

Suspensions are also used in medicine to deliver drugs to the body, and in science to study the properties of colloids and other complex systems.

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Answer:

False

Explanation:

Because it is false heat will always transfer so it require matter

Answer:

points srrypoints srry

Explanation:

points srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints srrypoints sr

Answer:

importent factors

Explanation:

The salient facts about something or qualities of something are the most important things about them: She began to summarize the salient features/points of the proposal. The article presented the salient facts of the dispute clearly and concisely. SMART Vocabulary: related words and phrases. Very important or urgent.

Answer

The answer is a/important factors. Pls subscribe to Amiredagoat Yt in return.

Explanation: