Using Gizmo ,describe the main use for each fuel Coal: Petroleum: In each case, what is the end product of burning the fossil fuel,and where does it go? Help is for today

1.05 moles of oxygen gas are consumed in the reaction when 2.10 mol of magnesium burns.

A mole is defined as \(6.02214076 × 10^{23}\) of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

We are given:

Moles of magnesium = 2.10 mol

For the given chemical reaction:

2Mg + O₂ → 2MgO.

By Stoichiometry of the reaction:

2 moles of magnesium react with 1 mole of oxygen gas.

So, 2.10 moles of magnesium will react with = \(\frac{1}{2}\) X2.10 =1.05 moles

Hence, 1.05 moles of oxygen gas are consumed in the reaction.

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Answer:

cells come from pre existing cells

The atoms that are the same element are atoms 1 and 2, because they have the same number of protons (option D).

Element is one of the simplest chemical substances that cannot be decomposed in a chemical reaction or by any chemical means and made up of atoms all having the same number of protons.

The atoms of an element have the same number of protons, which is the atomic number.

According to the table given above, three atoms and their respective proton, electron and neutron number are given.

It can be said that atoms 1 and 2 are of the same element, because they have the same number of protons.

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Answer:

The answer is D

Explanation:

Non metals are:

Hydrogen (H)

Sulphur (S)

Phosphorus (P)

Carbon (C)

Fluorine (F)

Oxygen (O)

Nitrogen (N)

Chlorine (Cl)

Bromine (Br)

Helium (He)

Argon (Ar)

Iodine (I)

Neon (Ne)

Krypton (Kr)

Radon (Rn)

Selenium (Se)

Xenon (Xe)

Answer:

7.98 g of glucose are needed to prepare 399 mL of glucose solution

Explanation:

2.0 % m/v

This data represents, a sort of concentration for solutions.

It means that, our solution contains 2 g of solute, in this case glucose, which are contained by 100 mL of solution.

We only have to make a rule of three, in order to solve the question:

In 100 mL of glucose solution, we have 2 g of solute

In 399 mL of glucose solution, we may have:

(399 . 2) / 100 = 7.98 g

Answer:

Physical Change. Physical changes are changes in which no bonds are broken or formed. This means that the same types of compounds or elements that were there at the beginning of the change are there at the end of the change.

Answer:

Genetic Diversity Examples

Genetic diversity is the total number of genetic characteristics in the genetic makeup of a species, it ranges widely from the number of species to differences within species and can be attributed to the span of survival for a species.

Explanation:

i hope this helps u.

Answer:

B.Urea

Explanation:

When an amino acid is broken down, the nitrogen it contains is converted into urea by the liver which then is excreted via the kidneys.

Answer:

urea

Explanation:

when u eat proteins the body breaks them down into amino acids . Ammonia is produced from leftover amino acids and it must be removed from the body. the liver produces many chemicals (enzymes) that change ammonia into a form called ureas

Answer:

0.68g/ml

Explanation:

The density of an object is its mass per unit volume. It is calculated using the formula

Density = mass / volume

Mass of stopper weighed = 4.8g

The volume of stopper can be got by subtracting the (volume of water) from the (volume of water+stopper) i.e.

= 39.2ml - 32.1ml

= 7.1ml

Volume of stopper = 7.1ml

Density of stopper= 4.8/7.1

Density= 0.676056

Therefore, the density of the stopper is 0.68g/ml

The amount of sulfuric acid in the solution is equal to 0.005 mol.

A pH indicator can be defined as a halochromic chemical compound introduced in small amounts to a solution so the pH of the solution can be evaluated by changes in absorption or emission properties.

pH indicators are used in titrations in chemistry and biology to determine the extent of a reaction.

Given, the reaction of calcium hydroxide was added to a sulfuric acid solution.

H₂SO₄  +  Ca(OH)₂  →  CaSO₄  +  2H₂O

In the balanced chemical reaction, one mole of calcium hydroxide is required to neutralize one mole of sulfuric acid.

Given, the moles of calcium hydroxide = 0.005 mol

The mole of sulfuric acid is 0.005 mol required to neutralize 0.005 moles of calcium hydroxide.

The color of the solution will change when the solution becomes neutralized.

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The change in entropy for the crystallization of 1.25 moles of butane can be calculated using the formula ΔS = ΔH_fusion / T, where ΔS is the change in entropy, ΔH_fusion is the enthalpy of fusion, and T is the temperature in Kelvin.

In the given problem, the enthalpy of fusion of butane is 24.3 kJ/mol. To convert this to J/mol, we multiply it by 1000, resulting in 24,300 J/mol. The melting point of butane is -0.5°C, which is equivalent to 272.65 K.

Using the formula, we can calculate the change in entropy as follows:

ΔS = (24,300 J/mol) / 272.65 K

    ≈ 89.25 J/(mol·K)

Therefore, the change in entropy for the crystallization of 1.25 moles of butane is approximately 89.25 J/(mol·K).

The change in entropy (ΔS) for the crystallization of a substance can be determined using the equation ΔS = ΔH_fusion / T, where ΔH_fusion is the enthalpy of fusion and T is the temperature in Kelvin. In this case, the enthalpy of fusion of butane is given as 24.3 kJ/mol, which is converted to 24,300 J/mol. The melting point of butane is -0.5°C, which is equivalent to 272.65 K.

By substituting the values into the equation, we find that the change in entropy is approximately 89.25 J/(mol·K). This means that for the crystallization of 1.25 moles of butane, the entropy decreases by 89.25 J/(mol·K).

Entropy is a measure of the disorder or randomness of a system. In this case, the crystallization process involves the transition from a disordered liquid state to an ordered solid state, resulting in a decrease in entropy. The magnitude of the entropy change depends on the enthalpy of fusion and the temperature. A higher enthalpy of fusion or a lower temperature leads to a larger change in entropy.

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Answer: for me everything ig

Explanation:

Answer:

To determine the number of moles in 1.204 x 10^24 molecules of bromine, we first need to know the molar mass of bromine. The molar mass of bromine is 79.904 g/mol.

Next, we can use Avogadro's number, which tells us that there are 6.022 x 10^23 molecules in one mole of a substance, to convert the number of molecules to moles.

1.204 x 10^24 molecules of bromine ÷ 6.022 x 10^23 molecules/mol = 19.99 moles of bromine

Therefore, there are approximately 19.99 moles in 1.204 x 10^24 molecules of bromine.

There is no reason to run these solutes at the 20 MWCO because they are both much smaller than the MWCO of the membrane.

The MWCO (molecular weight cut off) is the molecular weight of a solute at which it will be retained by a membrane during a process such as ultrafiltration or dialysis. If a solute has a molecular weight higher than the MWCO of a membrane, it will be retained and not pass through the membrane. If the molecular weight of a solute is lower than the MWCO, it will pass through the membrane.

In this case, glucose has a molecular weight of 180 g/mol (6 carbons x 12 g/mol per carbon + 6 oxygens x 16 g/mol per oxygen) and albumin has a molecular weight of approximately 81,942 g/mol (607 amino acids x 135 g/mol per amino acid). Both of these solutes have molecular weights that are much lower than 20,000 g/mol, which is a typical MWCO for ultrafiltration or dialysis membranes.

They would both easily pass through the membrane and be lost during the process. Instead, a membrane with a much lower MWCO would be needed if we wanted to retain these solutes during a process such as ultrafiltration or dialysis.

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Answer:

The retention factor would be high

Explanation:

The retention factor can be affected by the temperature, or affected by the composition of the solvent, when the FM are liquid.

Heptene is a derivative of the distillation of oil, it is a chemical compound that is made up of seven carbons, that is why it begins with the prefix hept.

Answer:

The answer is

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

\(volume = \frac{mass}{density} \\ \)

From the question

mass of object = 52.9 g

density = 3.14 g/mL

The volume of the object is

\(volume = \frac{52.9}{3.14} \\ = 16.847133757...\)

We have the final answer as

Hope this helps you

Answer:

c = 250.58 J/kg/\(^{0}C\)

Explanation:

The specific heat of a substance is the required quantity of heat to increase or decrease the temperature of its unit mas by 1 kelvin.

Q = mcΔθ

where: Q is the quantity of heat absorbed or released, m is the mass of the substance, c is its specific heat and Δθ is the change in temperature of the substance.

Given that; m = 1.0 kg, Q = 1303 J and Δθ = 5.2 \(^{0}C\), then;

c = Q ÷ (mΔθ)

  = 1303 ÷ (1.0 × 5.2)

  = 1303 ÷ 5.2

  = 250.58 J/kg/\(^{0}C\)

The specific heat of the object is 250.58 J/kg/\(^{0}C\).

Answer:

0.25

Explanation:

Answer:

See explanation

Explanation:

Total number of moles of gases in the mixture; 0.70 + 0.25 + 0.05 = 1 mole

Partial pressure= mole fraction of gas × total pressure

Mole fraction of hydrogen = 0.7/1 × 2.6 = 1.82 atm

Mole fraction of CO2 = 0.25/1 × 2.6 = 0.65 atm

Mole fraction of CO= 0.05/1 × 2.6 = 0.13 atm

0.0956 grams of helium will occupy a volume of 575 mL at 760 mmHg and 20°C

To calculate the mass of helium that will occupy a given volume at a specific temperature and pressure, we need to use the ideal gas law equation: PV = nRT. Here's how you can solve the problem:

Convert the volume to liters: 575 mL = 575/1000 = 0.575 L.

Convert the pressure to atmospheres: 760 mmHg = 760/760 = 1 atm.

Convert the temperature to Kelvin: 20°C = 20 + 273.15 = 293.15 K.

Plug the values into the ideal gas law equation: (1 atm) * (0.575 L) = n * (0.0821 L·atm/(mol·K)) * (293.15 K).

Rearrange the equation to solve for n (the number of moles): n = (1 atm * 0.575 L) / (0.0821 L·atm/(mol·K) * 293.15 K).

Calculate the value of n: n = 0.0239 moles.

To find the mass, we need to know the molar mass of helium, which is approximately 4 grams per mole.

Multiply the molar mass by the number of moles: 4 g/mol * 0.0239 moles = 0.0956 grams.

Therefore, approximately 0.0956 grams of helium will occupy a volume of 575 mL at 760 mmHg and 20°C.

Note: The ideal gas law assumes ideal gas behavior, and the calculated result may not be accurate under extreme conditions or for gases that deviate significantly from ideal behavior.

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The final temperature of the water is: T_final = 45.0°C

We can use the formula for the specific heat capacity of the water to solve this problem:

q = mcΔT

First, we can calculate the initial energy of the water:

q = mcΔT

q = (10.0 g) (4.184 J/g°C) (25.0°C)

q = 1,046 J

Next, we can calculate the final temperature after absorbing 840 J:

q = mcΔT

840 J = (10.0 g) (4.184 J/g°C) (ΔT)

ΔT = 20.0°C

Therefore, the final temperature of the water is:

T_final = T_initial + ΔT

T_final = 25.0°C + 20.0°C

T_final = 45.0°C

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The value of Kc for the given reaction is 0.0579 (rounded to four decimal places).

The formula for the equilibrium constant, Kc, of a reaction is given by the ratio of the product of the concentrations of the products raised to their respective stoichiometric coefficients to the product of the concentrations of the reactants raised to their respective stoichiometric coefficients.

The stoichiometric coefficients are the coefficients in the balanced chemical equation.

To determine the value of Kc for the reaction given by the following chemical equation:N2(g) + 3 H2(g) ⇌ 2 NH3(g)

we first need to write the expression for Kc.

The expression for Kc is given by the following formula:Kc = [NH3]² / [N2][H2]³.

We are given the equilibrium concentrations as follows:[N2]eq = 2.66 M[H2]eq = 0.64 M[NH3]eq = 3.34 M

We can substitute these values into the expression for Kc and obtain the following:Kc = (3.34)² / (2.66)(0.64)³ = 0.0579 (rounded to four decimal places).

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The compound that is a base from the given list is Ca(OH)2. Option 2.

What is a base?

A base is a chemical substance that produces hydroxyl ions as the only negative ion in aqueous solutions.

Ca(OH)2 is calcium hydroxide, which is a chemical compound consisting of one calcium ion (Ca2+) and two hydroxide ions (OH-).

It is classified as a base because, when it dissolves in water, it produces hydroxide ions that can accept protons (H+) from acids in a process known as a neutralization reaction.

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The final temperature of the water, given that the heat produced from the burning is added to 5691 g of water at 21 °C, is 79.2 °C

First, we shall obatine the heat of burning 7.90 g of C₆H₆. Details below:

2C₆H₆ + 15O₂ ⟶ 12CO₂ + 6H₂O +6542 KJ

Molar mass of C₆H₆ = 78 g/mol

Mass of C₆H₆ from the balanced equation = 2 × 78 = 156 g

From the balanced equation above,

156 g of C₆H₆ required 6542 KJ of heat

Therefore,

7.90 g of C₆H₆ will require = (7.90 × 6542) / 156 = 331.294 KJ

Finally, we shall determine the final temperature of the water. Details below:

Q = MC(T₂ - T₁)

331294 = 5691 × (T₂ - 21)

Clear bracket

331294 = 5691T₂ - 119511

Collect like terms

331294 + 119511 = 5691T₂

450805 = 5691T₂

Divide both sides by 5691

T₂ = 450805 / 5691

T₂ = 79.2 °C

Thus, the final temperature is 79.2 °C

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Answer:

Explanation:

Safety: The rate of energy release determines how quickly and explosively the energy is released. In the case of the stick of dynamite, the rapid and instantaneous release of energy can cause a violent explosion. On the other hand, the controlled release of energy from gasoline allows for safer and more manageable energy output, reducing the risk of accidents and minimizing potential harm.

Efficiency: The rate at which energy is output affects the efficiency of a system. In many practical applications, such as engines or power generation, it is desirable to convert energy into useful work as efficiently as possible. Controlling the rate of energy release allows for a more efficient conversion of energy, minimizing waste and maximizing the desired output.

Control and Functionality: Different systems require energy to be released at specific rates to perform their intended functions. For example, in an internal combustion engine, the controlled and timed release of energy from fuel allows for the synchronized movement of engine components, resulting in the desired mechanical work. Controlling the rate of energy output ensures that a system operates effectively and performs its intended function.

Environmental Impact: The rate at which energy is output can also impact the environment. In processes that release energy too rapidly or uncontrollably, such as certain combustion reactions or explosions, there can be significant environmental consequences, including air pollution, damage to ecosystems, and the release of harmful byproducts. Controlling the rate of energy release allows for better management and mitigation of these environmental impacts.

Overall, the rate at which energy is output from a system is crucial for safety, efficiency, control, functionality, and environmental considerations. By regulating and optimizing the rate of energy release, we can ensure that energy is utilized effectively and responsibly in various applications.

A wind farm can also be located offshore in most of the state.

Why in most of the state wind frames are located in offshore?

Offshore, faster wind speeds allow for substantially greater energy production. The term "offshore wind energy" describes the installation of wind farms inside of bodies of water. To produce electricity, they use the sea winds. These wind farms may employ floating wind turbines or turbines with solid foundations. Also, compared to other renewable technologies, offshore wind is more similar to onshore wind in terms of resource accessibility and technological maturity. Offshore wind farms are starting to blend into the water and coastal environment as a result.

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Answer:

I'm pretty sure They will exhibit high conductivity, ductility, and malleability because of their atomic structure.

Explanation:

I'm not 100 percent sure

Answer:

Explanation:

From the given information:

mass of silver chloride AgCl = 11.89 g

molar mass of AgCl = 143.37 g/mol

We know that:

number of moles = mass/molar mass

∴

number of moles of AgCl = 11.89 g/ 143.37 g/mol

number of moles of AgCl = 0.0829 mol

The chemical equation for the mineral called trona is:

\(\mathsf{Na_2CO_3.NaHCO_3.2H_2O}\)

when being reacted with hydrochloric acid, we have:

\(\mathsf{Na_2CO_3.NaHCO_3.2H_2O + 3HCl \to 3NaCl + 2CO_2 +4H_2O}\)

One mole of NaCl formed from one mole of trona sample = 0.0829 moles of AgCl

i.e. 0.0829 moles of NaCl can be formed from AgCl

mass of trona sample = number of moles × molar mass

mass of trona sample = 0.0829 × 226

mass of trona sample = 18.735 g

The mass in the percentage of NaHCO₃ = mass of NaHCO₃/ mass of trona

The mass in the percentage of NaHCO₃ = 6.93/18.735

The mass in the percentage of NaHCO₃ = 0.36989

The mass in the percentage of NaHCO₃ = 36.99%

Nonetheless, a 6.78 g samples manufactured from sodium carbonate in pure 100%

∴

6.78 g sample manufactured from Na₂CO₃ is purer.