What volume of dichloromethane (ch2cl2) is produced when 149 liters of methane (ch4) react according to the following reaction? (all gases are at the same temperature and pressure. ) methane (ch4)(g) carbon tetrachloride(g) dichloromethane (ch2cl2)(g)'

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Explanation:

Answer:

it equals 2.9 rounded and

2.854331 without rounding

Explanation:

formula= divide length value by 2.54

Answer:

b) The amount of energy required to eject an electron from an atom.

Answer:

Kc = [CaO] [O2] / [CaCO3]

Explanation:

Equilibrium constant, Kc is simply defined as the ratio of the concentration of products raised to their coefficient to the concentration of the reactants raised to their coefficient.

Thus, we can write the equation for the equilibrium constant, Kc for the reaction given in the question above as follow:

CaCO3(s) <==> CaO(s) + O2(g)

Kc = [CaO] [O2] / [CaCO3]

When the dry ingredients of a cake are combined, the result is a mixture. Option 3.

In chemistry, mixtures are substances that are obtained by mixing two or more chemically different substances together with each substance maintaining its chemical identity. In other words, the components of a mixture are still chemically unique and can be separated by physical means.

Mixtures can be homogeneous or heterogeneous. Homogenous mixtures are mixtures in which the components are uniformly dispersed throughout the entire mixture. For heterogeneous mixtures, the components are not uniform throughout the mixture.

Thus, when the dry ingredients of a cake, such as flour, sugar, etc., are combined, what we are going to have is a mixture. Whether this mixture would be homogenous or heterogeneous will depend on the level of mixing. Whatever the case may be, the components can still be separated by physical means.

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Answer:

the oxidation number is 4

Answer:

XZ2

Explanation:

I think lang po

Answer:

0.116 moles of ammonia can be produced from the reaction of 4.0 liters of hydrogen at 50.0°C and 1.2atm of pressure with excess nitrogen.

Explanation:

The balanced chemical equation for the reaction of hydrogen and nitrogen to form ammonia is:

N2(g) + 3H2(g) → 2NH3(g)

To determine how many moles of ammonia can be produced from the reaction of 4.0 liters of hydrogen at 50.0°C and 1.2atm of pressure with excess nitrogen, we need to use the ideal gas law equation:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

First, we need to convert the volume of hydrogen gas to moles using the ideal gas law equation:

n = PV/RT

where P is the pressure in atm, V is the volume in liters, R is the gas constant (0.0821 L·atm/mol·K), and T is the temperature in Kelvin.

n = (1.2 atm)(4.0 L)/(0.0821 L·atm/mol·K)(50.0°C + 273) = 0.174 mol H2

Since there is excess nitrogen, all of the hydrogen will react to form ammonia. Using the mole ratio between NH3 and H2 from the balanced chemical equation:

2 mol NH3 / 3 mol H2

we can calculate how many moles of NH3 will be produced:

n(NH3) = (0.174 mol H2) × (2 mol NH3 / 3 mol H2) = 0.116 mol NH3

Therefore, 0.116 moles of ammonia can be produced from the reaction of 4.0 liters of hydrogen at 50.0°C and 1.2atm of pressure with excess nitrogen.

The amount of heat required to completely melt 20.0 grams of ice at its melting point is 83.6 J.

To calculate the heat required to melt ice, we will use the formulaQ = mLwhere Q represents the heat, m represents the mass, and L represents the latent heat of fusion of water.

The latent heat of fusion of water is 334 J/g.

Therefore, for the given mass of ice (20.0 g) the amount of heat required would be:Q = mLQ = 20.0 g × 334 J/gQ = 6680 J

However, since the question specifically asks for the minimum amount of heat required to completely melt the ice, we must consider that at the melting point, some of the ice is already at a temperature of 0°C, and thus has already gained some heat.

To calculate this heat, we will use the specific heat capacity of water, which is 4.184 J/g°C.We know that to raise the temperature of 1 g of ice from -273.15°C to 0°C, we require 0.5 J of heat.Therefore, for 20 g of ice at -273.15°C, the heat required to raise the temperature to 0°C would be:

Q = 20 g × 0.5 J/gQ = 10 J

Thus, the total amount of heat required to completely melt 20.0 g of ice at its melting point would be:

Q = 6680 J + 10 JQ = 6690 J

However, since we are asked for the minimum amount of heat required, we must subtract the 10 J required to raise the temperature of the ice from -273.15°C to 0°C, giving us:Q = 6690 J - 10 JQ = 6680 J

Therefore, the correct answer is (2) 83.6 J (rounded to 3 significant figures).

:The minimum amount of heat required to completely melt 20.0 grams of ice at its melting point is 83.6 J.

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The correct statement is option B - A redox reaction involves either the transfer of an electron or a change in oxidation state of an element.Redox reactions involve the transfer of electrons from one substance to another.

The term "redox" refers to the simultaneous oxidation and reduction of molecules in the reaction, with one molecule losing electrons and the other gaining electrons.

Redox reactions is:Oxidation: Loss of electronsReduction: Gain of electrons. A molecule or atom that loses electrons is said to be oxidized, while one that gains electrons is said to be reduced.

The oxidized substance is an oxidizing agent, while the reduced substance is a reducing agent.

The statement "A redox reaction involves either the transfer of an electron or a change in oxidation state of an element" is true as the redox reaction involves both reduction and oxidation reactions.

Any substance that is oxidized should be reduced by another substance, and vice versa. Thus, a redox reaction involves the transfer of electrons from one substance to another.

Although oxygen is often present in redox reactions, it is not a necessary component of them. So, the statement C is false, and oxidation can not occur independently of reduction, so the statement A is false too.

The reducing agent reduces another substance and is itself oxidized; thus, statement D is also true.

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The equation which balances the given chemical reaction between magnesium and oxygen is 2Mg + O₂ → 2MgO.

Balanced equations are those in which all of the entities on both the reactant and product sides are equal.

Given chemical reaction:

Mg + O₂ → MgO

Above reaction is not balanced as number of oxygens are not equal on both sides.

Because the amount of magnesium atoms is not equal, this is not a balanced equation.

Because the amount of oxygen atoms is not equal, this is not a balanced equation.

This is a balanced equation as number of each atoms are equal on both sides.

Because the amount of magnesium atoms is not equal, this is not a balanced equation.

Hence balanced equation is 2Mg + O₂ → 2MgO.

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Carbon dioxide molecules can absorb and emit infrared radiation, and they are one of the most abundant constituents of Earth's atmosphere.

Thus, the correct options are:d) Are one of the most abundant constituents of Earth's atmospheree) Can move in many ways, thus absorbing and emitting infrared radiation

Carbon dioxide is a trace gas present in the Earth's atmosphere. It's a vital component of Earth's carbon cycle, which helps to regulate Earth's temperature and support life as we know it. Carbon dioxide molecules are one of the most common gases in the atmosphere, accounting for around 0.04% of the Earth's atmosphere.

The greenhouse effect is caused by carbon dioxide, methane, and other greenhouse gases. When the Sun's energy reaches the Earth's surface, it is absorbed and then radiated back into space as infrared radiation. Greenhouse gases absorb this radiation and trap it in the atmosphere, which causes the Earth's temperature to rise and the climate to change.

Carbon dioxide molecules are capable of absorbing and emitting infrared radiation due to their molecular structure, which consists of one carbon atom and two oxygen atoms. This property of carbon dioxide is the main reason it's classified as a greenhouse gas.

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Answer:

No that was 2 different plagues happening at the same time.

Explanation:

The type of solvent used with a marker can greatly affect the reaction and outcome of the marker. When selecting a solvent, it is important to consider the polar or non-polar nature of both the solvent and the marker in order to achieve the desired result.

Solvents are liquids that are used to dissolve substances and are an important aspect of chemical reactions and processes. When it comes to markers, the type of solvent used can greatly affect the reaction and outcome of the marker.

In general, solvents can be classified as polar or non-polar. Polar solvents, such as water, have a positive and negative end, while non-polar solvents, such as oil, have a more uniform distribution of electrons. The solubility of a substance is determined by its polar or non-polar nature and the polar or non-polar nature of the solvent.

Markers contain various types of dyes or pigments that can be either polar or non-polar. When a polar solvent, such as water, is used with a polar marker, the marker will dissolve easily, leading to a more intense and uniform color. On the other hand, when a non-polar solvent, such as alcohol, is used with a polar marker, the marker may not dissolve as well and the color may be lighter or less intense.

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When solid surfaces slide over each other, the kind of friction that occurs is called Sliding Friction.

26.94 mL of 0.470 M KOH is needed to react completely with 21.1 mL of 0.300 M \(H_2SO_4\).

To determine the volume of 0.470 M KOH needed to react completely with 21.1 mL of 0.300 M \(H_2SO_4\), you can use the following steps:
1. Write the balanced chemical equation:
\(2 KOH + H_2SO_4 --> K_2SO_4 + 2 H_2O\)
2. Calculate the moles of H2SO4:
moles of \(H_2SO_4\) = (0.300 mol/L) × (21.1 mL × 0.001 L/mL) = 0.00633 mol
3. Determine the stoichiometric ratio between KOH and \(H_2SO_4\) from the balanced equation:
2 moles KOH / 1 mole \(H_2SO_4\)
4. Calculate the moles of KOH needed to react completely with \(H_2SO_4\):
moles of KOH = (0.00633 mol) × (2 mol KOH / 1 mol ) = 0.01266 mol KOH
5. Calculate the volume of 0.470 M KOH solution needed:
volume of KOH = (0.01266 mol) / (0.470 mol/L) = 0.02694 L
6. Convert the volume to milliliters:
volume of KOH = 0.02694 L × (1000 mL/L) = 26.94 mL

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The number of mole of sodium hydroxide present in 1.50 L of a 2.55 M NaOH solution is 3.82. Then, the mass of 3.82 moles of NaOH is 153 g.

Molarity of a solution is the ratio of its number of moles of solute to the volume of solution in liters. It is the most common term used to express the concentration of a solution.

Given that,

molarity of NaOH solution = 2.55 M

volume  = 1.50 L

no.of moles = volume × molarity

n = 2.55 × 1.50 = 3.82 moles.

Molar mass of NaOH = 40 g/mol.

then, mass of 3.82 moles of NaOH is = 3.82 × 40 = 153 g.

Therefore, 153 g  of sodium hydroxide is needed to prepare 1.50 liters of a 2.55 m sodium hydroxide solution.

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Answer:

No. 4

Explanation:

Bacteria are produced from pre existing bacteria

Answer:

Gas

Explanation:

If you move a substance from one container to another and its volume changes, the substance is a gas. This is because, gases do not have fixed volume and shape; their shape and volume depend on the container used.

Answer:

I think gas.

Explanation:

Because gas doesn't have fixed shape and size.

Answer:

CUCO3_ CuO + CO2

Explanation:

exchange reaction occur when two soluble salts are mixed and immediately form an insoluble salt

Answer:

Option A = 14.19 atm

Explanation:

Given data:

Volume of gas = 2.50 L

Number of moles of gas = 1.35 mol

Temperature of gas = 320 K

Pressure of gas = ?

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

Now we will put the values in formula.

P × 2.50 L =  1.35 mol × 0.0821 atm.L/ mol.K×   320

P = 35.467 atm.L/ 2.50 L

P = 14.19 atm

Thus, option A is correct.

The pressure in atm that should be exerted is 14.19 atm.

Since

The volume of gas = 2.50 L

Number of moles of gas = 1.35 mol

Temperature of gas = 320 K

Now we know that

PV = nRT

here,

P= Pressure

V = volume

n = number of moles

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

T = temperature in kelvin

So,

P × 2.50 L =  1.35 mol × 0.0821 atm.L/ mol.K×   320

P = 35.467 atm.L/ 2.50 L

P = 14.19 atm

Thus, option A is correct.

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The chemical compound that is NOT likely to be a mineral is CS2. This is because minerals are ionic compounds and CS2 is a covalent compound. Covalent compounds are formed by the sharing of electrons between atoms, while ionic compounds are formed by the transfer of electrons between atoms.

Therefore, minerals are formed by the bonding of positively and negatively charged ions.
On the other hand, CaCO3, PbS, and CaF2 are all ionic compounds that are commonly found as minerals in the Earth's crust.

Calcium carbonate (CaCO3) is the main component of limestone and marble, lead sulfide (PbS) is commonly found in ore deposits, and calcium fluoride (CaF2) is a component of many minerals, including fluorite, while all of the chemical compounds listed may be found in the Earth's crust and atmosphere, only CaCO3, PbS, and CaF2 are likely to be minerals due to their ionic bonding. CS2, on the other hand, is not likely to be a mineral due to its covalent bonding.

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Answer:

350.7 g of NaCl

Explanation:

For this reactions our reactants are:

HCl and Na₂CO₃.

Then, the reaction is:

2HCl + Na₂CO₃ →  2NaCl  +  H₂CO₃

2 moles of hydrochloric acid react to 1 mol of sodium carbonate in order to produce 2 moles of salt and 1 mol of carbonic acid.

Ratio is 1:2. 1 mol of sodium carbonate can produce 2 moles of NaCl

Then, 3 moles of carbonate may produce (3 . 2) /1 = 6

We convert the moles to mass to determine the theoretical yield

6 mol . 58.45g /mol = 350.7 g

The theoretical yield of NaCl produced is 350.7 g.

NaCl is a salt, and it is an ionic compound.

The reaction is

\(\rm 2HCl + Na_2CO_3 \rightarrow 2NaCl + H_2CO_3\)

2 mol of HCl reacts with 1 mol of \(Na_2CO_3\) and produces 2 mol of NaCl and 1 mol of \(H_2CO_3\).

The ratio will be \(Na_2CO_3\) : NaCl

                                1 : 2

Then, for 3 mol of \(Na_2CO_3\)

\(\dfrac{3 \times 2}{1} = 6\)

Now, convert the moles to mass

\(6\; mol \times 58.45g /mol = 350.7 g\)

Thus, the theoretical yield produced is 350.7 g.

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Molecules in a perfume bottle travel from the bottle to your nose through the process of diffusion, where they move from an area of high concentration (inside the bottle) to an area of low concentration (surrounding air) until they reach your nose.

When a perfume bottle is opened, the perfume molecules escape into the surrounding air. These molecules are in constant motion due to their thermal energy. Through the process of diffusion, the perfume molecules move randomly and spread out from an area of high concentration (inside the bottle) to an area of low concentration (the air surrounding the bottle). This diffusion occurs as a result of molecular collisions and the tendency of molecules to move from regions of higher concentration to lower concentration until equilibrium is reached.

Once in the air, the perfume molecules continue to diffuse and mix with the surrounding air molecules. When you inhale, some of these perfume molecules can enter your nose and interact with olfactory receptors, triggering a sense of smell.

The mean free path refers to the average distance a molecule can travel before colliding with another molecule. In the context of perfume molecules in the air, the mean free path determines how far these molecules can move before encountering other air molecules. The mean free path depends on factors such as the size of the perfume molecules, the density of the air, and the temperature. In a perfume bottle, the mean free path of the perfume molecules may be relatively short due to the presence of other perfume molecules in close proximity.

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Answer:

The answers are 1:3:13

Explanation:

when I had to do these types of equations just search them up on you-tube lol theres this guy called Wayne Breslyn that does a really good job of explaining and has like the answers for any and everyy balancing equation

Answer:

Protons, neutrons, electrons..

Explanation:

Protons and neutrons consist of quarks which are stuck together by tiny things called gluons.

Hope this helps! :)

It takes approximately 406,687.5 joules of energy to take 150 grams of ice from -15°C to 125°C.

To determine the amount of energy required to take ice from -15°C to 125°C, we need to consider two stages of the process; Heating the ice from -15°C to 0°C, causing it to melt, and Heating the resulting water from 0°C to 125°C

We can calculate the amount of energy required for each stage separately and then add them together to get the total energy required.

Heating the ice from -15°C to 0°C; The specific heat capacity of ice is 2.09 J/(g·°C), which means that it takes 2.09 joules of energy to raise the temperature of 1 gram of ice by 1°C. Since we have 150 grams of ice, we can calculate the amount of energy required to raise the temperature of the ice from -15°C to 0°C as;

Q1 = m × c × ΔT

= 150 g × 2.09 J/(g·°C) × (0°C - (-15°C))

= 4,987.5 J

Therefore, it takes 4,987.5 joules of energy to heat the ice from -15°C to 0°C

Heating the water from 0°C to 125°C; The specific heat capacity of water is 4.18 J/(g·°C), which means that it takes 4.18 joules of energy to raise the temperature of 1 gram of water by 1°C. We need to heat the water from 0°C to 100°C (the boiling point of water at standard pressure) and then from 100°C to 125°C.

For the first stage, we can calculate the amount of energy required as;

Q₂a = m × c × ΔT

= 150 g × 4.18 J/(g·°C) × (100°C - 0°C)

= 62,700 J

The heat of vaporization of water at standard pressure is 2,260 J/g. Since we have 150 grams of water, we can calculate the amount of energy required to convert all the water to steam as:

Q₂b = m × Lv = 150 g × 2,260 J/g

= 339,000 J

Therefore, it takes a total of;

Q = Q₁ + Q₂a + Q₂b

= 4,987.5 J + 62,700 J + 339,000 J

= 406,687.5 J

Therefore, it takes 406,687.5 joules of energy.

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Answer: try 42.8

Explanation: you might have to round to 42.8 because of the significant  figures

Effusion refers to the movement of a gas through a small hole. It is different from diffusion which involves the movement of a gas from a region of higher concentration to a region of lower concentration.

The effusion of a gas is described by Graham's law. According to Graham's law, the rate of effusion of a gas is inversely proportional to the square root of the molar mass of the gas.

The following are true regarding the effusion of a gas;

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