A process in which substances chemically rearrange to form new substances
Molecule
Energy
Organism
Chemical reaction
Matter
Cellular respiration

Answer:

arbon monoxide reacts with oxygen to produce carbon dioxide. Write the balanced chemical equation for this reaction.

...

Example.

Step Result Equation balanced?

1 carbon monoxide + oxygen → carbon dioxide

2 CO + O 2 → CO 2

3 Reactants: 1 × C, (1 × O) + (2 × O) = 3 × O. Products: 1 × C, 2 × O Not balanced.

4 2CO + O 2 → CO

Answer:

There are 30 neutrons in a single Fe2+ atom.

Answer:30

Explanation:

(i dont know if its correct i am in a rush,)

Number of neutrons = 56 – 26 = 30. Thus there are 30 neutrons in a single $F{{e}^{2+}}$ atom. Note: Neutron is generally a subatomic particle which is neutral in charge. Mass of the neutron is slightly greater than the mass of the proton.

Answer:

V = 42.6 L

Explanation:

Given data:

Number of moles of Cl₂ = 1.9 mol

Temperature and pressure = standard

Volume occupy = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

By putting values,

1 atm ×  V = 1.9 mol ×0.0821 atm.L /mol.K × 273.15 k

V = 42.6  atm.L / 1 atm

V = 42.6 L

Answer:

According to the activity series of metals, a metal can replace another metal in a compound if it is more reactive than that metal. The more reactive metal will form a compound, while the less reactive metal will be displaced as a free element. So, the reaction that will not take place is the one in which the metal is less reactive than the one in the compound.

Looking at the given reactions, the reaction that will not take place is 2NaCl + Ca → CaCl2 + 2Na. This is because calcium (Ca) is more reactive than sodium (Na) on the activity series of metals, which means that it can replace sodium in a compound. Therefore, calcium will react with sodium chloride (NaCl) to form calcium chloride (CaCl2) and sodium (Na) as a free element. However, the given reaction shows sodium (Na) displacing calcium (Ca), which is not possible according to the activity series of metals.

Answer: Reactions 1 and 3 will not take place

Zn + MgCl2 → Mg + ZnCl2 - Reaction 1

Li + AgNO3 → Ag + LiNO3 - Reaction 2

2NaCl + Ca → CaCl2 + 2Na - Reaction 3

Pb(NO3)2 + Ni → Ni(NO3)2 + Pb - Reaction 4

Explanation: In the Reactivity Series, Magnesim(Mg) has a higher reactivity tha Zinc so it should be that there is no reaction whereas in reaction 3, Sodium has a higher reactivity than Calcium so no reaction happens

The different types of hazardous wastes include: a) Corrosive, b) Flammable, d) Toxic, e) Chemically reactive. Hazardous wastes are substances that pose a risk to human health or the environment.

They can be categorized into different types based on their properties and potential hazards.

Corrosive wastes are substances that can cause damage to metals or other materials through chemical reactions. They have a pH less than or equal to 2 or greater than or equal to 12.5.

Flammable wastes are substances that have a flashpoint below 60 degrees Celsius (140 degrees Fahrenheit). They can ignite easily and sustain combustion.

Toxic wastes are substances that can cause harm or death when ingested, inhaled, or come into contact with living organisms. They may contain toxic chemicals such as heavy metals, pesticides, or certain organic compounds.

Chemically reactive wastes are substances that can undergo violent reactions or release toxic gases when exposed to heat, pressure, or other substances. They may be unstable or prone to detonation.

Nonpoisonous wastes, as mentioned in option c, are not typically considered hazardous wastes since they do not possess Hazardous the inherent toxicity or potential hazards associated with the other types mentioned above.

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Explanation:

To calculate the percent yield, we need to compare the actual yield to the theoretical yield. The theoretical yield is the amount of product that would be obtained if the reaction went to completion based on the stoichiometry of the balanced equation.

First, let's determine the molar mass of CaCO3 (limestone) and CaO (quicklime):

- Molar mass of CaCO3 = 40.08 g/mol (molar mass of Ca) + 12.01 g/mol (molar mass of C) + (3 * 16.00 g/mol) (molar mass of O) = 100.09 g/mol

- Molar mass of CaO = 40.08 g/mol (molar mass of Ca) + 16.00 g/mol (molar mass of O) = 56.08 g/mol

Next, we can calculate the theoretical yield of CaO:

The molar ratio between CaCO3 and CaO is 1:1 according to the balanced equation. Therefore, the mass of CaO produced is the same as the mass of CaCO3 used.

The theoretical yield of CaO is 3.3 × 10^3 g.

Now we can calculate the percent yield:

Percent Yield = (Actual Yield / Theoretical Yield) * 100

Percent Yield = (1 × 10^3 g / 3.3 × 10^3 g) * 100

Percent Yield = 30.30%

Therefore, the percent yield of CaO in this reaction is 30.30%.

The first solution provided by meguelratatouille came close to the correct answer, but erred in assuming that equal moles implies equal mass. The following discussion corrects this mistake.

To determine the percent yield, we must compare the actual yield to the theoretical yield.

Theoretical Yield

From the balanced chemical equation we have:

CaCO3(s) --> CaO(s) + CO2(g)

It is necessary to know the molar mass of CaCO3 and CaO to determine the amount of CaO produced from a given amount of CaCO3:

Molar mass CaCO3 = 100.09 g/mol

Molar mass CaO = 56.08 g/mol

Then, to find the total mass of CaO produced by 3.3 x 10^3 g of CaCO3 reactant, we calculate:

3.3 x 10^3 g CaCO3  
x 1 mol CaCO3 / (100.09 g/mol CaCO3)
x 1 mol CaO / (1 mol CaCO3)
x 56.08 g CaO / (1 mol CaO)
-----------------------------------
1848 g CaO

which we report as 1.8 x 10^3 g CaO after applying significant figures.

Actual Yield

Finally, the percent yield is given by dividing the actual yield by the theoretical yield we just computed:

(1 x 10^3 g) / (1.8 x 10^3 g) x 100% = 55.6% = 56%

Answer:

c. A nucleus with a large mass will be on the left side, and there will be neutrons in the equation.

Explanation:

In the process of nuclear fission, a neutron collides with a nucleus with a large mass and that nucleus splits into isotopes (substances that have the same atomic number that the original substance, but different weight number).

In this case, the nucleus with a large mass is U and n represents the neutrons.

Answer:

no I don't listen to them

Answer:

I love his style of Nu Metal and the influence that metal has on his music ultimately. I feel like Zilla fans don't give SosMula enough props tho, he def puts the icing on the cake in every song

Explanation:

Answer:

according to the law,the pressure would increase if volume has been decreased.

Explanation:

the reason is that,pressure and volume are inversely proportional,if volume has been decreased that means the pressure would increase because decreased volume would create a sort of compacted situation for particles either of a liquid or gas,decreasing volume would bring these particle together, closer to each other because of decreased  and since the volume has decreased they dont have enough space,they would end up getting closer to each other most likely to collide, which drastically increase pressure .

Answer:  FeO2

Explanation:

 1.116       g  Fe

0.480     g O

We want to compare the NUMBER of Fe and O atoms.  We only have their masses, but since the molar mass of Fe is 5 times that of O, let's multiply the grams of O by 5 to have it "catch up" to the iron in ternms of number of atoms.   If the molar masses were the same, the masses would be in direct proportion to the formula.  Since they aren't, multiply by the molar mass ratio:

(1.116 grams Fe) x 1 = 1.116 g Fe

(0.480 g O) x 5 = 2.40 g O  [Changes the O mass into a number that correlates with the number of atoms relative to iron],

If the molar masses were the same, this would be the ratio of O to Fe atoms in the compound.  Normalize to the Fe number by dividing both by 1.116:

Fe = 1

O = 2.15

Not perfect, but an empiricle formula of FeO2 makes sense.  I don't see enough information here to prove that this is also the molecular formula, but FeO2 is a valid compound.  Fe(IV)O2,

1. The empirical formula of the compound is Fe₂O₃

2. The molecular formula of the compound is Fe₂O₃

1. Determination of the empirical formula of the compound.

Fe = 1.116 g

O = 0.480 g

Divide by their molar mass

Fe = 1.116 / 56 = 0.02

O = 0.480 / 16 = 0.03

Divide by the smallest

Fe = 0.02 / 0.02 = 1

O = 0.03 / 0.02 = 1.5

Multiply by 2 to express in whole number

Fe = 1 × 2 = 2

O = 1.5 × 2 = 3

Therefore, the empirical formula of the compound is Fe₂O₃

2. Determination of the molecular formula of the compound.

Empirical formula = Fe₂O₃

Molar mass = 5 × molar mass of O₂ = 5 × 32 = 160 g/mol

Molecular formula = empirical × n = molar mass

[Fe₂O₃]n = 160

[(2×56) + (3×16]n = 160

[112 + 48]n = 160

160n = 160

Divide both side by 160

n = 160 / 160

n = 1

Molecular formula = [Fe₂O₃]n

Molecular formula = [Fe₂O₃] × 1

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Answer:

In the case of s and p orbitals, there can be three types of overlap. s – s orbital overlap (formation of H2 molecule): The mutual overlap between the half-filled s orbitals of two atoms is called s – s overlap and the covalent bond formed is known as sigma (s) bond. e.g. formation of a hydrogen molecule from two hydrogen atoms.

Explanation:

Answer:

When two metal atoms are bonded together, a third type of bond, a delta bond, is possible.

Explanation:

Answer:

When the gaseous phase of water reaches a metal lid it condenses to form water.

Explanation:

The gaseous phase of water is at a higher temperature than the temperature of a metal lid. Thus when it comes in contact with the cold lid it loses heat and gets converted to the liquid phase.

When water vapor loses temperature, it undergoes a process called condensation, which results in its conversion to a liquid state. This process is essentially the opposite of vaporization. Typically, condensation occurs when a vapor is compressed or cooled to its saturation limit, causing the molecular density within the gas phase to reach its maximum threshold.

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Potential creation of future competition is not an advantage of outsourcing. The correct option is E

Outsourcing refers to the practice of contracting tasks or services to an external third-party organization.

Therefore, Outsourcing does not have the advantage of potentially creating future competition. It alludes to the chance that the outsourced supplier could someday turn into a rival by learning about the company's business or sector. Although it may be a risk, outsourcing is not thought to have this benefit.

Therefore, The correct answer is (e) potential creation of future competition.

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Answer:liters

Explanation:

Answer:

c

Explanation:

A chemical reaction produced a new substance. In a chemical reaction, the atoms that make up the reactants are rearranged to produce various products.

chemical reaction, the transformation of one or more chemicals (the reactants) into one or more distinct compounds (the products). Chemical elements or chemical compounds make up substances.

A chemical reaction is one in which  two or more reactants will react to form a new substance. When new substance will form it will produce heat. Therefore, when science teacher was mixing two liquids it was generating heat.

Heating a substance allow molecules to move faster. When heat is given to the object it will move fast. When heat will apply to a solid it will turn into liquid. When heat is supplied to the liquid it will turn into gas.

Therefore, A chemical reaction produced a new substance. In a chemical reaction, the atoms that make up the reactants are rearranged to produce various products.

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The order of solubility from most to least can be given as carbonate>sulfate>iodate>chloride. Carbonates are the most soluble.

The maximum amount of a material that may dissolve in another is known as its solubility. A saturated solution is created when a solvent can dissolve its maximum quantity of solute before reaching equilibrium. A supersaturated solution results when extra solutes are dissolved past its equilibrium solubility point under specific circumstances.

Dissolution is the action of disintegrating. In contrast to the speed of solution, which specifies how rapidly a molecule dissolves in a solvent, solubility is not a feature of matter. The order of solubility from most to least can be given as carbonate>sulfate>iodate>chloride.

Therefore,  the order of solubility from most to least can be given as carbonate>sulfate>iodate>chloride.

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To inflate the baggie with a volume of 836 milliliters using nitrogen gas at a pressure of 1.05 atm and a temperature of 301 K, we can apply the ideal gas law. Using the equation PV = nRT and rearranging it to solve for the number of moles (n), we find that n = PV / RT, which yields approximately 0.08757 moles of nitrogen gas. By multiplying this value by the molar mass of nitrogen (28.02 g/mol for N₂), we can determine the mass of nitrogen gas needed, which comes out to be approximately 2.453 grams. Thus, around 2.453 grams of nitrogen gas are required to inflate the baggie to the desired volume.

To determine the mass of nitrogen gas needed to inflate the baggie, we can use the ideal gas law equation:

PV = nRT

Where:

P = Pressure = 1.05 atm

V = Volume = 836 mL = 0.836 L (converted from milliliters to liters)

n = Number of moles of gas (what we want to find)

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

T = Temperature = 301 K

Rearranging the equation, we can solve for the number of moles (n):

n = PV / RT

n = (1.05 atm * 0.836 L) / (0.0821 L·atm/(mol·K) * 301 K)

n = 0.08757 mol (rounded to 5 decimal places)

Now, we can calculate the mass of nitrogen gas using the molar mass of nitrogen (N₂):

Molar mass of N₂ = 2 * atomic mass of nitrogen (N)

Atomic mass of N = 14.01 g/mol

Molar mass of N₂ = 2 * 14.01 g/mol

Molar mass of N₂ = 28.02 g/mol

Finally, we can calculate the mass of nitrogen gas (m) using the number of moles (n) and the molar mass (M):

m = n * M

m = 0.08757 mol * 28.02 g/mol

m = 2.453 g (rounded to 3 decimal places)

Therefore, approximately 2.453 grams of nitrogen gas are needed to inflate the baggie.

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The conditions that are necessary for hail to form is The freezing temperature of the air below the cloud causes the water droplets to freeze.

It should  benoted that the Clouds form  asd a result of the invisible water vapor in the air whichcondenses into visible water droplets whichis been conidered as the ice crystals.

It should benoted that  this can take place  wheen the parcel of air must be saturated, which implies that iot can no longer hold all the water it contains in vapor form,  then it turns to condense into a liquid or solid form.

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\(M_{2} V_{2}\) The volume of water needed to create a 0.330 M \(H_{2} SO_{4}\) solution from a 1.00 M solution is 91.36 mL.

To calculate the volume of water needed to create a 0.330 M \(H_{2} SO_{4}\) solution from a 1.00 M solution, we can use the dilution formula:

\(M_{1} V_{1}\) = \(M_{2} V_{2}\)

where \(M_{1}\) is the initial concentration (1.00 M), \(V_{1}\) is the initial volume (45.0 mL), \(M_{2}\) is the final concentration (0.330 M), and \(V_{2}\) is the final volume.

1.00 M × 45.0 mL = 0.330 M × \(V_{2}\)

Solve for \(V_{2}\):

\(V_{2}\) = (1.00 M × 45.0 mL) / 0.330 M
\(V_{2}\) = 136.36 mL

Now, subtract the initial volume from the final volume to find the volume of water that needs to be added:

136.36 mL - 45.0 mL = 91.36 mL

Therefore, you must add 91.36 mL of water to the 45.0 mL of 1.00 M H2SO4 solution to create a 0.330 M \(H_{2} SO_{4}\) solution.

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Moving hot food in a covered pan to a cooler space, such as a storage room, or submerging it in ice water, is another option. Ice can also be used to hasten the cooling process.

Soups can be chilled by submerging them in cold water. This technique aids in a swift and secure drop in food temperature. To make a slush, put some ice in a big container or sink and add some water. After that, put the plate of food to be chilled into the ice bath. bathing in ice water and stirring the food often.Food is stirred with ice paddles, which are plastic containers that have been frozen after being filled with water.using ice as a component (if water is an ingredient).chiller that jars or tumbles.

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The molar concentration of CO2 in a 4.26 L sample of acid rain is 0.0081 mol/L.Acid rain is caused by air pollution.

The molar concentration of carbon dioxide in a 4.26L sample of acid rain is calculated as follows:First, we will calculate the number of moles of carbon dioxide in the sample. The formula to calculate the number of moles is:Number of moles = mass of the substance/molar mass of the substanceThe molar mass of CO2 is 44.01 g/mol. 355 ppm means 355 parts per million, which is equivalent to 355 mg/L.To calculate the mass of carbon dioxide in 4.26 L of acid rain:Mass of CO2 = Volume × ConcentrationMass of CO2 = 4.26 L × 355 mg/L = 1510.3 mg = 1.51 gTherefore, the number of moles of CO2 in the sample is:Number of moles of CO2 = Mass of CO2/Molar mass of CO2 = 1.51 g/44.01 g/mol = 0.0344 molTo calculate the molar concentration of CO2:Molar concentration of CO2 = Number of moles of CO2/Volume of solution in litersMolar concentration of CO2 = 0.0344 mol/4.26 L = 0.0081 mol/L, When sulfur dioxide and nitrogen oxide pollutants combine with atmospheric moisture, they form acidic compounds that can travel long distances and fall as acid rain. Acid rain can damage forests, kill fish in streams, and corrode buildings and monuments, among other things.

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Answer:

190

Explanation:

Gold has atomic number of 79, which is the number of protons.

Mass number = #protons + #neutrons = 79 + 111 = 190

Answer:

Answer:

a) 4

b) 3

c) 1

d) 3

e) 4

f) 0
g) 5

h) 3

i) 3

j) 4

50 students has 2.

Hope that helps

It's true that, the trans isomer of trans-1,4-dibromocylohexane is more stable than the cis isomer because the trans isomer can adopt a conformation in which both bromine atoms are in orientations, while the cis isomer cannot. This conformation gives the trans isomer a more stable structure, making it more stable than the cis isomer.

The statement "trans-1,4-dibromocylohexane is more stable than the cis isomer because only the trans isomer can adopt a conformation in which both bromine atoms are in orientations" is correct. The trans isomer of 1,4-dibromocylohexane is more stable than the cis isomer because the trans isomer can adopt a chair conformation in which both bromine atoms are in equatorial positions. This allows for the bromine atoms to be as far apart from each other as possible, reducing steric strain and increasing stability. In contrast, the cis isomer cannot adopt a conformation in which both bromine atoms are in equatorial positions, leading to increased steric strain and decreased stability. Therefore, the trans isomer of 1,4-dibromocylohexane is more stable than the cis isomer.

Your question is incomplete but most probably your full question was

Trans-1,4-dibromocylohexane is more stable than the cis isomer because only the trans isomer can adopt a conformation in which both bromine atoms are in orientations. True or false.

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Answer:

Carbon 16

Explanation:

Isotope of nitrogen

The number of molecules in 10.0 gram of NaOH is 15 * 10²².

To solve this question, we need to understand some terms of mole concept,

Mole - It is the amount of substance containing same number of molecules or atoms as there are atoms in 12 gram of carbon-12 isotope.

Molecules - It is group of atoms bonded together, representing the smallest fundamental unit of a chemical compound taking part in chemical reaction.

Molecular weight - The sum of atomic masses of all atoms in molecules.

Avogadro number - It is the number of atoms, ions, electrons, molecules in one mole of substance. It is represented as NA.

NA = 6.0 * 10²³ (approx)

To calculate the number of molecules, we apply the formulae,

no. of molecules = moles * NA

moles = weight / molecular weight

moles = 10.0 / 40

          = 0.25

Substituting this value to calculate number of molecules,

no. of molecules = 0.25 * 6.0 * 10²³

                            = 15 * 10²²

Therefore the number of molecules of in 10.0 g of NaOH is 15 * 10²².

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Answer:

Mass of methane required in gram = 226.35 gram (Approx.)

Explanation:

Given:

Heat energy used = 12,567 kJ

Missing data;

Δcombustion = 891  kJ/mol

Find:

Mass of methane required in gram

Computation:

Number of mol methane burned = Heat energy used / Δcombustion

Number of mol methane burned = 12,571 / 891

Number of mol methane burned = 14.1088 mol

1 mol of methane in gram = 16.043 grams

So,

Mass of methane required in gram = Number of mol methane burned x 1 mol of methane in gram

Mass of methane required in gram = 14.1088 x 16.043

Mass of methane required in gram = 226.3474

Mass of methane required in gram = 226.35 gram (Approx.)

Answer:

Its 5

Explanation: