What are the physical and chemical changes that take place during baking a cake?

After the reaction is complete, no nitrogen and no hydrogen molecules remain, and 8.00 x 1014 molecules of NH3 are produced.

In the equation, nitrogen and hydrogen react at a high temperature, in the presence of a catalyst, to produce ammonia, according to the balanced chemical equation:N2(g)+3H2(g)⟶2NH3(g)The coefficients of each molecule suggest that one molecule of nitrogen reacts with three molecules of hydrogen to create two molecules of ammonia.

So, to determine how many molecules of ammonia are produced when four nitrogen and nine hydrogen molecules are present, we must first determine which of the two reactants is the limiting reactant.

To find the limiting reactant, the number of moles of each reactant present in the equation must be determined.

Calculations:
Nitrogen (N2) molecules = 4Hence, the number of moles of N2 = 4/6.02 x 1023 mol-1 = 6.64 x 10-24 mol
Hydrogen (H2) molecules = 9Hence, the number of moles of H2 = 9/6.02 x 1023 mol-1 = 1.50 x 10-23 mol

Now we have to calculate the number of moles of NH3 produced when the number of moles of nitrogen and hydrogen are known, i.e., mole ratio of N2 and H2 is 1:3.

The mole ratio of N2 to NH3 is 1:2; thus, for every 1 mole of N2 consumed, 2 moles of NH3 are produced.
The mole ratio of H2 to NH3 is 3:2; thus, for every 3 moles of H2 consumed, 2 moles of NH3 are produced.
From these mole ratios, it can be observed that the limiting reactant is nitrogen.

Calculation for NH3 production:
Nitrogen (N2) moles = 6.64 x 10-24 moles
The mole ratio of N2 to NH3 is 1:2; therefore, moles of NH3 produced is 2 × 6.64 × 10−24 = 1.33 × 10−23 moles.

Now, to determine how many molecules of NH3 are produced, we need to convert moles to molecules.
1 mole = 6.02 x 1023 molecules
Thus, 1.33 x 10-23 moles of NH3 = 8.00 x 1014 molecules of NH3 produced.

To find the amount of each reactant remaining after the reaction is complete, we must first determine how many moles of nitrogen are consumed, then how many moles of hydrogen are consumed, and then subtract these from the initial number of moles of each reactant.

The moles of nitrogen consumed = 4 moles × 1 mole/1 mole N2 × 2 mole NH3/1 mole N2 = 8 moles NH3
The moles of hydrogen consumed = 9 moles × 2 mole NH3/3 mole H2 × 2 mole NH3/1 mole N2 = 4 moles NH3
Thus, the moles of nitrogen remaining = 6.64 × 10−24 mol – 8 × 2/3 × 6.02 × 10^23 mol-1 = 5.06 × 10−24 mol
The moles of hydrogen remaining = 1.50 × 10−23 mol – 4 × 2/3 × 6.02 × 10^23 mol-1 = 8.77 × 10−24 mol

Finally, the number of molecules of each reactant remaining can be calculated as follows:
Number of N2 molecules remaining = 5.06 × 10−24 mol × 6.02 × 10^23 molecules/mol = 3.05 × 10−1 molecules ≈ 0 molecules
Number of H2 molecules remaining = 8.77 × 10−24 mol × 6.02 × 10^23 molecules/mol = 5.28 × 10−1 molecules ≈ 0 molecules.

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If 280 grams of CO₂ is at 13 °C and 445 kilopascal, the volume for the given data in the mL is 34,000 mL.

First we need to convert the given pressure in atm, temperature in Kelvin.

T=13+273=286K

P=445 kpa×(1000 pa/1 kpa)×(760 mmHg/101325 pa)×(1 atm/760 mmHg)

=445×1000×1 atm/101325

=445000 atm/101325

=4.3918 atm

The molar mass of CO₂ is 44g/mol and the number of moles of 280g of CO₂ is

moles(n)=280 g×(1 mol/44 g)

=6.3636 mol

According to the ideal gas law

PV=nRT

Where R=0.08206 Latm/molK

Rearrange the formula for V and plug all the values to solve for V

V=(nRT/P)

=(6.3636 mol×0.08206 Latm×286K)/4.3918atm×molK

=149.38435 L/4.3918

=34.0143 L≈34 L

Convert the above volume in L

34 L×(1000 mL/1 L)

=34000 mL

Therefore, the volume of the given data in mL is 34000 mL.

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Answer:

Well hey there!

There isn't any info on what you need help with!

Sorry...

Answer:

get it back to me by tomorrow

Explanation:

I am currently in life generally but will be perfect

Water has three states of matter namely gas, solid or ice form and liquid. Molecules in solid state are not able to move since they are tightly packed.

Molecules can move in liquid state and they moves easily in gaseous state.

Every substance have three states, that are gas, liquid and solid. In solid state, molecules are tightly packed and are unable to move apart. In liquid state, molecules have some space to move and motion of liquid is easy.

The movement of molecules in a substance depends on the space allotted for them or called the volume. More volume between molecules, easy to move apart.

Gaseous state is composed of molecules located far apart from each other and they diffuse easily. Therefore, motion in three states of water is different and moves faster in gaseous state.

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Answer:

which property is least helpful in identifying a sample of matter is (B) VOLUME

Explanation:

volume depend on the amount of substance present and are not useful in the identification of a sample of matter. volume is an extensive property so it is not useful identifying the sample of matter.

The molecular formula of the compound containing 81.82% carbon

and 18.18% hydrogen by mass is C₃H₈

From the question given above, the following data were obtained:

Carbon (C) = 81.82%

Hydrogen (H) = 18.18%

Molar mass of compound = 44 g/mol

We'll begin by calculating the empirical formula of the compound. This can be obtained as follow:

Carbon (C) = 81.82%

Hydrogen (H) = 18.18%

Divide by their molar mass

C = 81.82 / 12 = 6.818

H = 18.18 / 1 = 18.18

Divide by the smallest

C = 6.818 / 6.818 = 1

H = 18.18 / 6.818 = 2.67

Multiply by 3 to express in whole number

C = 1 × 3 = 3

H = 2.67 × 3 = 8

Thus, the empirical formula of the compound is C₃H₈

Finally, we shall determine the molecular formula of the compound. This can be obtained as follow:

Molecular formula = Empirical formula × n = molar mass

[C₃H₈]n = 44

[(12×3) + (1×4)]n = 44

[36 + 4]n = 44

40n = 44

Divide both side by 40

n = 44/40

n ≈ 1

Molecular formula = C₃H₈ × n

Molecular formula = C₃H₈ × 1

Therefore, the molecular formula of the compound is C₃H₈

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The given reaction equation tells us that for every 1 mol of C₅H₁₂, 5 moles of CO₂ will be produced. Since 8.25 mol of C₅H₁₂ is given, 8.25 mol C₅H₁₂ x 5 moles CO₂/1 mol C₅H₁₂ = 41.25 moles CO₂ will be produced.

Reaction is the process of responding to an event or stimulus in a particular way. It can occur at the physical, cognitive, or emotional level. Physically, a reaction could be as simple as a reflex or as complex as a multi-step process. Cognitively, it could involve forming a judgment or understanding. Emotionally, it could involve feelings of fear, shock, anger, or joy. In the context of science, reactions are often chemical or physical processes that involve the conversion of one set of substances into another.

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C. A nucleus with a large mass will be on the left side, and two or more smaller mass nuclei will be on the right side is the way to identify a reaction as a fusion reaction.

What is fusio reaction?

Fusion reactions are nuclear reactions in which atomic nuclei combine to form a heavier nucleus, releasing energy. In a fusion reaction, the combined mass of the reactants is greater than the mass of the product, and the difference in mass is released as energy according to Einstein's famous equation E=mc^2. This means that the reactants in a fusion reaction have a larger mass than the products, and the products have a smaller mass.

What is nucleus?

The nucleus is the positively charged central core of an atom. It consists of protons and neutrons, which are collectively known as nucleons. The number of protons in the nucleus determines the atomic number of the element, while the total number of nucleons determines the mass number. The electrons of an atom orbit around the nucleus in shells or energy levels, which gives atoms their chemical properties.

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• If somebody threw a curveball this would be a kinetic energy. because ou transfer energy to it and it move.

• we also call this energy of motion .

The functional group in alcohol is a hydroxyl group (-OH), in phenol, it is a hydroxyl group attached to a benzene ring, and in ether, it is an oxygen atom (-O-) between two alkyl or aryl groups.

Given that the question asks to identify each of the following compounds as an alcohol, a phenol, or an ether. The question seems to be incomplete as there are no options or compounds mentioned. However, given below is a general explanation of the three compounds -Alcohol: Alcohol is a compound that contains a hydroxyl functional group (-OH) that is attached to a carbon atom. The hydroxyl group in alcohol makes it polar and thus, able to form hydrogen bonds. Alcohol is used as a solvent, fuel, and disinfectant. Phenol: Phenol is an aromatic compound that contains a hydroxyl group (-OH) attached to a benzene ring. It is used in the production of detergents, plastics, and pharmaceuticals. Phenol is used as a disinfectant and anesthetic. Ether: Ether is an organic compound that contains an oxygen atom between two alkyl or aryl groups. It is a colorless, volatile, and highly flammable liquid that is used as a solvent and as a starting material in the synthesis of organic compounds. To identify a compound as an alcohol, phenol, or ether, we need to examine the functional groups in the molecule.

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Answer:

CH4 and CH3 CH2 CH2 CH3

Explanation:

Answer:

CH4 and CH3CH2CH2CH3

Explanation:

its right on edg

The number of atoms present in the FCC unit cell is 4. The Avogadro number is a constant and its value is 6.022 × 10²³.

The density of a crystalline substance with the molar mass 'M', unit cell edge length 'a', Molar mass 'M', the number of atoms present per unit cell 'Z' is given by the equation:

Density = ZM / a³N₀

The molar mass of silver = 107.86 g/mol

408.7pm = 408.7 × 10⁻¹² m

10.5g/cm³ = 10500 kg /m³

N₀  =  ZM / a³d

= 4 ×  107.86 / (408.7 × 10⁻¹²)³ × 10.5 × 10³

= 6.025 × 10⁻²⁴

Thus the Avogadro’s number is 6.025 × 10⁻²⁴.

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Don’t really know ‘bout this one, but here’s something I found.

Answer:

Isotopes are various forms of an element that have the same number of protons but a different number of neutrons. Some elements, such as carbon, potassium, and uranium, have multiple naturally-occurring isotopes. Isotopes are defined first by their element and then by the sum of the protons and neutrons present.

Carbon-12 (or 12C) contains six protons, six neutrons, and six electrons; therefore, it has a mass number of 12 amu (six protons and six neutrons).

Carbon-14 (or 14C) contains six protons, eight neutrons, and six electrons; its atomic mass is 14 amu (six protons and eight neutrons).

While the mass of individual isotopes is different, their physical and chemical properties remain mostly unchanged.

Answer:

New environments for puppies may make them excited, fearful, aggressive, or confused.

Explanation:

"When your dog first experiences a new location or environment, there's no way of knowing how they'll react. New sights, sounds, and smells could make them fearful, aggressive, or over-excited, but with the proper training and introduction, most dogs will quickly adapt and start taking every new location in stride." - Excerpt from *Puppy training textbook*

New environments are also a good thing in puppy growth, to teach them how to learn and adapt to new surroundings.

Hope this helps :)

Answer:

By measuring out 3.9 grams of cobalt (II) chloride up to a volume of 1.0 L of solution.

Explanation:

Hello there!

In this case, considering this question about molarity, it turns out possible for us to calculate the required mass of cobalt (II) chloride by firstly compute the moles present in 1.0L of the given 0.03-M solution:

\(M=\frac{n}{V} \\n=V*M\\\\n=1.0L*0.03\frac{molCoCl_2}{L}\\\\n=0.03molCoCl_2\)

Next, since the molar mass of cobalt (II) chloride is 129.84 g/mol, we compute the grams we need to measure out in order to prepare this solution:

\(m_{CoCl_2}=0.03molCoCl_2*\frac{129.84gCoCl_2}{1molCoCl_2} \\\\m_{CoCl_2}=3.9gCoCl_2\)

Regards!

Acids have sour taste, low pH and dissolves metals.

The list that describes the characteristics of an acid is that it has sour taste, low pH, and dissolves metals.

An acid is a chemical substance that has the ability to donate hydrogen ions when involved in a chemical reaction.

The following are the characteristics or features of an acid:

Therefore, the list that describes the characteristics of an acid is that it has sour taste, low pH, and dissolves metals.

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Answer:

\(\large \boxed{\mathrm{subscripts}}\)

Explanation:

Subscripts are numbers written after elements, subscripts indicate how many of each atom there are in a compound.

The atoms of each element in an compund is written in the subscript. The number of atoms present in any compound whether made up of only same element or different element is termed as Atomicity.

Given compound = \(\boxed{\sf{H_2O}}\)

Here, there are two atoms of hydrogen and one atom of oxygen, So ratio of the atoms of elements in Water molecule = 2 : 1

━━━━━━━━━━━━━━━━━━━━

According to this question, we must know that everything related to grams, means a mass of something.

So, we cannot use grams (g) or kilograms (kg) as a unit of volume.

For volume, we use liters (L), milliliters (mL), and cm^3 as we see on the written question. Also, we have plenty of units for volume in different systems used to measure.

Answer: milliliters (mL) or centimeters cubic (cm^3)

Answer:

Solubility in water and Conductivity

Explanation:

Ionic compounds are important for the heart to beat because they are soluble in water and conduct electricity. This allows the electrical impulses that regulate heartbeats to easily travel through the heart cells, which are mostly composed of water. Solubility in water allows the ionic substances to be easily dispersed in the heart cells, while conductivity allows the electrical impulses to move quickly and efficiently through the cells. The crystalline structure and melting point of ionic compounds are not as relevant for this function.

The answer would be \(2.79\) × \(10^{5}\ ml\).

When you have a big number and have to make it smaller, the exponent will be positive therefore \(10^{5}\) and always remember that you have to round. It asks for 3 significant figures so you look at the last digit you need, which is 8, and then look to the right of it to see if you will need to round up or down. Since the number to its right is a 6, that means that you have to round up therefore the answer is \(2.79\) instead of \(2.78\).

The equilibrium constant for the reaction given that the equilibrium concentration of [PH₃] = 0.250 M, [H₂] = 0.580 M, and [P₄] = 0.750 M is 7.3

From the question given above, the following data were obtained:

The equilibrium constant for the reaction can be obtained as shown below:

Equilibrium constant = [Product]ᵐ / [Reactant]ⁿ

Where

Equilibrium constant = [H₂]⁶[P₄] / [PH₃]⁴

Equilibrium constant = [(0.580)⁶ × 0.750] / (0.250)⁴

Equilibrium constant = 7.3

Thus, the equilibrium constant for the reaction is 7.3

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Answer:

The energy stored in the spring when the bike goes over a bump is \(6.6\times 10^{-3}\) joules.

Explanation:

Let suppose that spring has a linear behavious, by means of Hooke's Law, definition of Work and Work-Energy Theorem we find that the potential energy stored in the spring (\(U_{g}\)), measured in joules, is defined by:

\(U_{e} = \frac{1}{2}\cdot k\cdot x^{2}\) (1)

Where:

\(k\) - Spring constant, measured in newtons per meter.

\(x\) - Deformation, measured in meters.

If we know that \(k = 33\,\frac{N}{m}\) and \(x = 0.02\,m\), the energy stored by the spring due to compression is:

\(U_{e} = \frac{1}{2}\cdot \left(33\,\frac{N}{m} \right) \cdot (0.02\,m)^{2}\)

\(U_{e} = 6.6\times 10^{-3}\,J\)

The energy stored in the spring when the bike goes over a bump is \(6.6\times 10^{-3}\) joules.

Answer:

The number of moles of water in 100 g of vinegar is 0.47 moles.

Explanation:

Answer:

C. Eye color

Explanation:

Answer:

eye color

Explanation: eye color is in your genes the other 3 you learn or are thing that happen over time. pls brainly ;-;

Answer:

Aluminium can dissolve in HCl

6HCl + 2Al ---> 2AlCl₃ + 3H₂

Minimum volume of HCl required is 76.9 mL.

Explanation:

When a metal dissolves in an acid, a chemical reaction takes place. The chemical reaction occuring is the displacement of the hydrogen ions present in the acid by the metallic ions formed when the metal dissolves in the acid. The displaced hydrogen ion accepts electrons frommthe metal and is evolved as hydrogen gas.

The ability of a metal to be dissolve in an acid with the resultant evolution of hydrogen gas is determined by the position of the metal in the electrochemical series. Metals which are above hydrogen in the electrochemical series are able to displace hydrogen from dilute acids and as such, dissolve in the acid. However, metals which are lower than hydrogen in the electrochemical series are not able to displace hydrogen from dilute acids and as such are not soluble in the acids.

Of the three metals, aluminium, Al, copper, Cu, and silver, Ag, only aluminium is higher than hydrogen in the electrochemical series and as such can dissolve in the 3.25 M HCl.

The equation of the reaction is given below:

6HCl + 2Al ---> 2AlCl₃ + 3H₂

Molar mass of Al = 27 g; Mass of Al reacting = 2.25 g

Number of moles = mass/molar mass

Number of moles of Al present in 2.25 g = 2.25/27 = 0.083 moles

From the equation of reaction, 6 moles of HCL are required to react with 2 moles of Al.

Number of moles of HCl required to react with 0.083 moles of Al = 0.083 × 6/2 = 0.25 moles of HCl

From the formula, molarity = number of moles / volume; volume = number of moles / molarity

Molarity of HCl = 3.25 M; number of molesnof HCl = 0.25 moles

Volume = 0.25 / 3.25 = 0.0769 L or 76.9 mL

Therefore, minimum volume of HCl required is 76.9 mL.

Assuming the number of moles give is of CO₂, since we know that 1 mol is equivalent to 22.4 L in this case, we can use rule of three to answer this:

V ---- n

x ---- 3.75 mol

22.4 L ---- 1 mol

So, we have the follwing relation:

So, we need a volume of 84 L.

Answer:

True

Explanation:

Answer:

True

Explanation:

the lungs is a part of respiratory system, so it is true; its main job is to remove Co2 from your body and bring in fresh air

Answer: B.) -12.4

Explanation: This is because the sign of heat transfer is determined by the system's perspective. In this case, the system is releasing heat to the surroundings, which means that heat is flowing out of the system, making the heat transfer negative. The magnitude of the heat transfer is 12.4 J.