Balance the following redox reaction in acidic solution. Cu+ (aq) + O2 (g) → Cu+2 (aq) + H2O (l)

Answer:

'3' in NaHCO₃ is the number of moles oxygen in 1 mole of sodium bicarbonate

Explanation:

see above note.

C.  

There Are Three Atoms Of Oxygen In Sodium Bicarbonate.

_______

I Got It Right On The Test, Hope It Helps :)

Answer:

I think its city y, I don't know if its right though.

Explanation:

The mass of magnesium cyanide needed to prepare the solution is 1.57 g

We'll begin by calculating the number of mole of Mg(CN)₂. This can be obtained as follow:

Volume = 275 mL = 275 / 1000 = 0.275 L

Molarity of Mg(CN)₂ = 0.075 M

Mole = Molarity x Volume

Mole of Mg(CN)₂ = 0.075 × 0.275

Mole of Mg(CN)₂ = 0.020625 mole

Mole of Mg(CN)₂ = 0.020625 mole

Molar mass of Mg(CN)₂ = 24 + 2(12 + 14) = 76 g/mol

Mass = mole × molar mass

Mass of Mg(CN)₂ = 0.020625 × 76

Mass of Mg(CN)₂ = 1.57 g

Therefore, 1.57 g of Mg(CN)₂ is needed to prepare the solution

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The test strips that check for the presence of GHB, Rohypnol, or ketamine will not be effective if the drink contains dairy products.

Generally test strips are used to detect the pathological changes, that is especially present in urine. Basically the test strips indicates the acidity of urine by changing of the color on contact with it. Test strips react to acid in urine and determine its pH by color change, which is a good indicator of whole body pH.

Strip Testing basically refers to the process wherein semiconductor devices are electrically tested while they are still in their lead frame strips, i.e., before they are singulated into many individual units.

Hence, the test strips that check for the presence of GHB, Rohypnol, or ketamine will not be effective if the drink contains dairy products.

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In a visible spectrometry lab, how would fingerprints on a cuvette affect the concentration reading as the Fingerprints on a cuvette during a visible-spectrometry lab will negatively affect the concentration reading.

Because fingerprints on the cuvette can change the path of the light that passes through it, which will affect the results of the spectrophotometer. Spectrophotometry is an analytical technique that measures the absorption of light by a sample. When fingerprints or other substances are present on a cuvette, it can interfere with the light that passes through the cuvette and alter the results of the spectrophotometer. Fingerprints have a different absorption spectrum than the sample, and they can cause additional light scattering and absorption to occur, which leads to errors in the measurement of concentration. In order to obtain accurate and precise results in a visible spectrometry lab, it is essential to clean the cuvette properly and avoid fingerprints or other impurities.

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2Al + 6HCl → 3H2 + 2AlCl3, It is a redox reaction ; Cu(OH)2 → H2O + CuO and this is a decomposition reaction.

Balanced chemical equation is that equation where number of atoms of each type in the reaction is same on both the reactants and product sides.

Balanced chemical equation for the reaction between aluminum (Al) and hydrochloric acid (HCl) is: 2Al + 6HCl → 3H2 + 2AlCl3

This is a redox reaction, where aluminum is oxidized to Al3+ and hydrogen ions (H+) are reduced to hydrogen gas (H2).

Balanced chemical equation for the given reaction is: Cu(OH)2 → H2O + CuO

To balance this equation, we need to put a coefficient of 1 in front of Cu(OH)2, 1 in front of H2O, and 1 in front of CuO.

This is a decomposition reaction where Copper (II) hydroxide (Cu(OH)2) breaks down into water (H2O) and Copper (II) oxide (CuO).

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Answer:

Oranges

Explanation:

     Oranges have a lot of genetic diversity within them, since oranges were already well versed in growing in winter months, oranges have gentically modified themselves through natural selection into be able to prouduce in warmer climates. Oranges also have changes in genetics which gives them a lot of gentic diversity that effects their, size, taste, texture, acidity and ability to reproduce.

Answer: A. The wall push back on the ball with more force, which causes the return speed of the to increase.

Explanation: For every for exerted on an object, there is an equal force exerted in the opposite direction. When the ball hits the wall with more force, the wall pushes back on the ball with more force. This causes the return speed of the ball to increase. The force that the wall applies to the ball launches the ball in the opposite direction. The greater the force on the ball, the greater it’s speed becomes .

Answer: The wall pushes back on the ball with more force, which causes the return speed of the ball to increase.

Explanation: Correct on Study Island

Answer:

A) He is taking lot’s of notes.

Explanation:

Conflict resolution refers to the process that helps the two parties involved in a communication to turn towards a peaceful resolution when a dispute arises. Conflicts are very obvious to occur among the people working together. Around the professional world, conflicts may emerge among the co-workers, supervisors, and among the management team. The process that helps to resolve the issues is termed to be the conflict resolution process.

In the given situation, the conflict resolution process of resolving the issue would be option A. All the other options would lead towards the emergence of conflict or misunderstanding respectively.

Answer:

A.

He is taking lots of notes.

Explanation:

I took the practice on edge.2020

Cooling the reaction mixture before adding water helps to prevent premature precipitation of the product and ensures better control of the precipitation process, yielding a higher-purity product.

To avoid early or uncontrolled precipitation, which can result in reduced product purity, the reaction mixture is frequently cooled before water is added to precipitate the product. As a result of the product's reduced solubility in the solvent and slowed molecular mobility, cooling increases the likelihood that it may precipitate.

Additionally, cooling might lessen adverse effects that could happen at higher temperatures. In many chemical processes, it enables greater control of the precipitation process, resulting in a larger yield and a purer product.

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Answer: Yes

Explanation:

Answer:

trueeeeee

Explanation:

Answer:

NaF

Explanation:

Answer: the answer is Naf

Explanation
and I love pop tart kitties OWO but i hope this helped i have a in science so i got 100% on it bye bye OWO

Answer: 4

Explanation: if you move to spaces in a number line from 2 you would be at 4

We can begin by completing the appropriate algebraic operations to isolate x on one side of the equation before trying to identify it.

20 = 80(.5)^8.32/x

Put 80 on both sides:

20/80 = (.5)^8.32/x

Make the left side simpler:

1/4 = (.5)^8.32/x

Take both sides' reciprocal:

4 = x/(.5)^8.32

Make the right side simpler:

4 = x/0.0027067

Divide the two sides by 0.0027067:

x = 0.0027067 * 4

x = 0.0108268

Hence, x is almost equal to 0.0108268.

Your response is in scientific notation since 5.94 is at least 1 but less than 10. (3.4 10 3) + (5.6 10 4) = 5.94 10 4 is the solution.

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The products of the given chemical equation is given serially 1) zinc nitrate and lead bromide,2) hydrogen chloride and copper bromide 3) sodium phosphate and potassium acetate .

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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The drugs that appear to produce therapeutic effects by blocking receptor sites for dopamine to reduce symptoms associated with schizophrenia are called dopamine receptor antagonists, also known as antipsychotic medications or neuroleptics.

How do these drugs work?

These drugs work by binding to dopamine receptors in the brain and blocking the action of dopamine, a neurotransmitter that is believed to be involved in the development of schizophrenia. By reducing the activity of dopamine in certain regions of the brain, these drugs help to alleviate the positive symptoms of schizophrenia, such as hallucinations, delusions, and disorganized thinking.

Examples of commonly used dopamine receptor antagonists include typical antipsychotics such as haloperidol and chlorpromazine, as well as atypical antipsychotics such as risperidone, olanzapine, and quetiapine. These medications have different affinities for specific dopamine receptor subtypes and may also affect other neurotransmitter systems, contributing to their therapeutic effects.

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All reactions that work to hydrolyze large biochemical substances into smaller subcomponents is referred to as catabolism.

Metabolism is the sum of all chemical reactions that is occurring in an organism. A metabolic pathway is a sequence of reactions that is used to produce a particular product. Metabolic pathways are usually mediated by enzymes, which help speed the rate of reaction of each step by lowering the activation energy.

The process of breaking down large molecules into smaller ones is called catabolism. Catabolism breaks bonds and releases energy. Anabolism, on the other hand, is the term that describes the process of building larger molecules from the smaller ones. Anabolism forms new bonds and also requires the input of energy.

Anabolic and catabolic pathways are often coupled to make the overall energetics of a process to be favorable.

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Salt X is 0.05 M (molar concentration) soluble at 25°C.

To calculate the solubility of salt X at 25°C, we need to determine the amount of salt that dissolves in a given volume of solution. In this case, we have a saturated solution containing 0.28 g of salt X in 100 cm³ of solution.

The solubility is defined as the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature. Therefore, the solubility of salt X is given by the ratio of the mass of the solute (0.28 g) to the volume of the solution (100 cm³).

Solubility = Mass of solute / Volume of solution

Solubility = 0.28 g / 100 cm³

Since the solubility is expressed in grams per cubic centimeter (g/cm³), we can directly use the given values.

Solubility of salt X = 0.28 g / 100 cm³

To determine the solubility in mol/L (Molar concentration), we need to convert the mass of the solute to moles. The molar mass of salt X is given as 56 g/mol.

Number of moles = Mass / Molar mass

Number of moles = 0.28 g / 56 g/mol

Number of moles = 0.005 mol

Now, we can calculate the solubility in mol/L (M).

Solubility = Number of moles / Volume of solution (in L)

Solubility = 0.005 mol / 0.1 L

Solubility = 0.05 M

Therefore, the solubility of salt X at 25°C is 0.05 M (molar concentration).

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The final temperature, in degrees Celsius, of the gas is 34.62 °C

From the question, we are to determine the final temperature, in degrees Celsius

From the Pressure law or Gay-Lussac's law

We have that, for a given mass and constant volume of an ideal gas, the pressure exerted on the sides of its container is directly proportional to its absolute temperature.

Using the formula,

\(\frac{P_{1} }{T_{1}} = \frac{P_{2} }{T_{2}}\)

Where P₁ is the initial pressure

T₁ is the initial temperature

P₂ is the final pressure

and T₂ is the final temperature

From the given information,

P₁ = 739 mmHg

T₁ = 23 °C = 23 + 273.15 = 296.15 K

P₂ = 768 mmHg

T₂ = ?

Putting the parameters into the formula, we get

\(\frac{739}{296.15}=\frac{768}{T_{2} }\)

Then,

\(T_{2} = \frac{768 \times 296.15}{739}\)

T₂ = 307.77 K

Therefore,

T₂ = 307.77 - 273.15 = 34.62 °C

Hence, the final temperature, in degrees Celsius, of the gas is 34.62 °C

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Here is the complete question:

A gas sample has a pressure of 739 mmHg when the temperature is 23 °C. What is the final temperature, in degrees Celsius, when the pressure is 768 mmHg, with no change in the volume or amount of gas?

Answer: 177600 J or 177.6kJ

Explanation:

For this problem, we need to use q = mcAT

we have m = 10000, and AT= 40. The specific heat of iron is 0.444.

So now we can plug it in: q = 10000*.444*40 = 177600 J or 177.6kJ

Answer:

1848000J

Explanation:

Given parameters:

Mass of iron  = 100kg

Temperature change  = 40°C

Unknown:

Energy needed to increase the temperature  = ?

Solution:

The amount of energy needed is given by the expression below:

     H  = m C Δt

m is the mass

c is the specific heat capacity

Δt is the change in temperature

  c for iron is 462J/kg°C

 Now insert the parameters and solve;

  H  = 100 x 462 x 40  = 1848000J

Answer:

Robot 1 : 150 J

Robot 2: 40 J

Explanation:

30 N x 5m = 150 J

20 N x 2m = 40 J

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Zirconium (Zr) has an average atomic mass of 91.22 amu and is made up of the isotopes 90Zr, 91Zr, 92Zr, 94Zr, and 96Zr. The atom of which isotope has the greatest mass?To determine the isotope with the largest mass, we must first understand what isotopes are. Isotopes are atoms that have the same atomic number but a different number of neutrons, resulting in a different atomic mass.

As a result, we can determine the mass of a specific isotope by determining the number of neutrons it contains. This is done by subtracting the atomic number from the atomic mass.For example, in the case of 90Zr, the atomic number of zirconium is 40, and the atomic mass of this isotope is 90. As a result, the number of neutrons in this isotope is equal to 90 - 40 = 50. We can repeat this process for the other zirconium isotopes, as follows:
- For 91Zr, neutrons = 91 - 40 = 51
- For 92Zr, neutrons = 92 - 40 = 52
- For 94Zr, neutrons = 94 - 40 = 54
- For 96Zr, neutrons = 96 - 40 = 56
As a result, we can see that the isotope with the largest mass is 96Zr, with a mass of 96 atomic mass units.

Therefore, we can conclude that the atom of the isotope 96Zr has the greatest mass among all the isotopes of zirconium.

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Zirconium (Zr) has an average atomic mass of 91. 22 amu and is made up of the isotopes 90Zr, 91Zr, 92Zr, 94Zr, and 96Zr. The atom of which isotope has the greatest mass is 96Zr.

What are isotopes?Isotopes are atoms of a single element with differing numbers of neutrons in their nuclei. In addition, isotopes have the same atomic number and, as a result, the same number of electrons, but different atomic masses or mass numbers due to their differing numbers of neutrons.Isotope abundances are different in different materials and can also be modified over time by radioactive decay or other processes.The mass of an atom is primarily determined by the number of neutrons and protons in its nucleus. Because the number of electrons in the atom's outermost shell determines its chemical behavior, the number of neutrons in an atom's nucleus has little impact on its chemical behavior.

Zirconium (Zr) has an average atomic mass of 91.22 amu and is made up of the isotopes 90Zr, 91Zr, 92Zr, 94Zr, and 96Zr. To determine which of these isotopes has the greatest mass, look at the atomic number of each isotope:90Zr has a mass of 89.904 amu91Zr has a mass of 90.904 amu92Zr has a mass of 91.905 amu94Zr has a mass of 93.906 amu96Zr has a mass of 95.908 amuThe atom with the highest mass is 96Zr, which has a mass of 95.908 amu. Therefore, the atom of which isotope has the greatest mass is 96Zr.

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The pressure she exerts on the carpet sample:-5.8279 MPa

P = F/A

Where,

F= Force

A = Area

Given that;

d= 0.987 cm =0.987  x 10^-2 m

m= 45.5 kg

Area = πr^2= (π(0.987  x 10^-2)^2/2)

       =7.6511 x 10^-5  square meter

Force= mg

        = 45.5 x 9.8

        =445.9 N

Pressure = force/ area

              =445.9/7.6511 x 10^-5

              =5.8279 MPa

The pressure she exerts on the carpet sample:-5.8279 MPa

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Each atom contributes a single electron to the bond which involved two electrons that the atoms share.  The type of bond is double covalent bond. Hence option 4 is correct.

Covalent bond is defined as a type of chemical link where atoms share electrons to create electron pairs. These electron couples are referred to as bonding pairs or sharing pairs. Atoms create covalent bonds with one another in order to build a complete electron shell, which increases stability.

They will distribute their valence electrons equally among themselves since they have the same electronegativity. A covalent bond is a form of link between two atoms where electrons are shared equally.

Thus, each atom contributes a single electron to the bond which involved two electrons that the atoms share.  The type of bond is double covalent bond. Hence option 4 is correct.

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Answer:

pH = 10.15

Explanation:

NaOH is a strong base so it dissolves completely.

Calculate your [OH-] first by dividing the moles of OH- by the volume.

0.0015 mol OH- / 11 L = 0.00014

Then, calculate the pOH:

pOH = -log[OH-] = -log(0.00014) = 3.85

pOH + pH = 14, so pH = 14 - pOH = 14 - 3.85 = 10.15

Here are the compounds arranged in order of decreasing reactivity:

Compound with strong electron-donating group (e.g., -NH2, -N(CH3)2)

Compound with moderate electron-donating group (e.g., -CH3, -OCH3)

Compound with no substituents (i.e., benzene ring itself)

Compound with moderate electron-withdrawing group (e.g., -Cl, -Br)

Compound with strong electron-withdrawing group (e.g., -CHO, -COOH)

To arrange the following compounds in order of decreasing reactivity towards electrophilic aromatic substitution, we need to consider the electron-donating or electron-withdrawing groups present on the aromatic ring. The general rule is that electron-donating groups increase the reactivity, while electron-withdrawing groups decrease the reactivity.

Please note that the actual reactivity of a specific compound can be influenced by other factors as well, such as steric hindrance and resonance effects. This ordering represents a general trend based on the electron-donating or withdrawing nature of the substituents.

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Answer:

The less valence electrons an atom has, the least likely it will gain electrons. Electron affinity decreases down the groups and from right to left across the periods on the periodic table because the electrons are placed in a higher energy level far

Explanation:

Answer:

Electron affinity increases upward for the groups and from left to right across periods of a periodic table because the electrons added to energy levels become closer to the nucleus, thus a stronger attraction between the nucleus and its electrons. Remember that greater the distance, the less of an attraction; thus, less energy is released when an electron is added to the outside orbital. In addition, the more valence electrons an element has, the more likely it is to gain electrons to form a stable octet. The less valence electrons an atom has, the least likely it will gain electrons.

Electron affinity decreases down the groups and from right to left across the periods on the periodic table because the electrons are placed in a higher energy level far from the nucleus, thus a decrease from its pull. However, one might think that since the number of valence electrons increase going down the group, the element should be more stable and have higher electron affinity. One fails to account for the shielding affect. As one goes down the period, the shielding effect increases, thus repulsion occurs between the electrons. This is why the attraction between the electron and the nucleus decreases as one goes down the group in the periodic table. hope i helped

Explanation:

Answer:

pick the second one I've done that test

Answer:

Criminology analyzes how crime affects the community or society as a whole , while forensic science analyzes individual crimes and evidence.

Answer:

The correct answer is - reduce carbon emission, decrease deforestation snd increase plantation, use renewable energy.

Explanation:

Global warming is the process that is caused by human activities to increase the temperature of the earth. It increases the heat of the climate of the earth that leads to a negative impact on the environment. Increasing the greenhouse gas emission leads to trapping heat and cause global warming.

The three major solutions are:

1. reduce carbon and greenhouse gases: The main cause of global warming is the emission of greenhouse gases and an increase in carbon in the atmosphere, so reduce these gas emissions by avoiding fossil fuels that release carbon.

2. reduce deforestation and increase the plantation: trees take carbon dioxide from the environment, So prevent them from cutting and planting new trees will help reducing carbon from the environment.

3. Using renewable energy will help them to not depend on fossil fuels or water waste that will help in reducing global warming.