what is the theoretical yield of iron (55.845 g/mol) when 10.0 g fe2o3 (159.69 g/mol) reacts with excess carbon (12.01 g/mol)?

The pressure inside the syringe is 0.68 Pa

The ideal gas law, also known as the general gas equation, is the equation of state for a hypothetical ideal gas. It has some limitations, but is a good approximation of the behavior of many gases under many conditions.

It is specified by the following formula:

PV = nRT

P =  nRT/V

n = mass/ molar mass

n = 0.1/28

n = 0.003 moles

R = 8.314 J/(mol.K)

T = 0°C or 273 K

V =  10 ml

P =  nRT/V

P =  0.003× 8.314×273/10

P = 0.68 Pa

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The physical properties of ammonia iare as listed below:

It the compound which is composed of four atoms one is nitrogen and rest are hydrogen.

A physical properties are those properties which is measurable and whose values describe the state of a physical system. The favourable changes in the physical properties of a given system is used to describe its changes mostly between the momentary states. Physical properties are referred as a observables. They are not kind of modal properties.

Chemical property is defined as the characteristic of the particular substance which can be observed in the chemical reaction. Some of the major chemical properties of any substance include toxicity, flammability, pH value, heat of combustion, rate of radioactive decay, and chemical stability.

Thus, we concluded that the physical properties of ammonia are as listed below:

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Answer:

- gas at room temperature

- strong, unpleasant odor

- dissolves easily in water

Explanation:

From system equation to make 10 liters of 25% saline solution  we need 2.5 L saline 40% and 7,5 L saline 20%

to calculate how much saline solution 40% and 20% needed to make 10L 25% saline solution we can calculate by system of equation below:

We can call the amount of 40% solution x and the amount of 20% solution y.

x + y = 10  (1)

0.40x + 0.20 y = 10 * 0.25

0.40x + 0.20 y = 2.5  

4x + 2y = 25 (Multiply by 10 to get rid of decimals) (2)

we use elemination way to get the x

2x + 2y = 20(Multiply (1) by 2)  (3)

so if formula (2) - formula (3)

4x + 2y = 25

2x + 2y = 20 -

2x = 5

x = 2.5      

y= 10-x

y= 10- 2.5 = 7.5

so we need 2.5 L saline 40% and 7,5 L saline solution 20%

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The atomic number states the number of protons, so the number of protons in the element silicon is 14.

Atoms are made up of subatomic particles namely protons, electrons and neutrons. In an atom the three particles have a certain amount.

Protons are particles that make up atoms that are positively charged and have a mass as large as that of hydrogen, which is 1.67262 x 10⁻²⁷ kg or 1,836 times heavier than electrons. Protons are so deep in the atomic nucleus that they cannot be disturbed by particles outside the atom.

The element silicon (Si) has an atomic number = 14 and a mass number = 28

So that the number of subatomic particles is:

The number of protons = atomic number

= 14

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When the wavelength of a wave increases, the frequency of the wave decreases.

Wavelength is the length of a single cycle of a wave, as measured by the distance between one peak or trough of a wave and the next.

Wavelength is often designated in physics as λ, and corresponds to the velocity of the wave divided by its frequency.

Wavelength can be calculated as follows;

λ = v/f

The relationship between wavelength and frequency is inverse i.e. as one increases, the other decreases.

Therefore, as the frequency decreases, the wavelength increases and vice versa.

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Explanation:

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The rule that states the absolute temperature of a gases and the universal gas standard are equivalent to the product of the volume and the pressure of a single gram of an ideal gas.

The associated with the motion energy of atoms or molecules as in system is measured by temperature. The water droplets in a hot cup coffee move more quickly than the hydrogen atoms in a cup of iced tea because the average kinetic energy of hot coffee is higher.

The addition of energy (heating), which raises the temperature, increases the movement of atoms and molecules. By removing energy (cooling), atoms and molecules slow down and the temperature drops as a result.

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NADH and FADH2 donate electrons to different electron transport chain complexes because the citric acid cycle and glycolysis both rely on the oxidized forms of these electron carriers to function, and these forms must be readily available.

Through oxidative phosphorylation, the mitochondrial electron transport chain uses a series of electron transfer reactions to produce cellular ATP. Reactive oxygen species (ROS), which support both homeostatic signaling and oxidative stress during disease, are produced as a result of electron transport.

In this visual presentation, we give an overview of oxidative phosphorylation and how it interacts with the electron transport chain's creation of ROS. We also provide various translational methodologies for evaluating mitochondrial energetics in both healthy and unhealthy conditions.

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Answer: If you are talking about Hormones or how they have been changing recently through puberty then i think kids are now starting to look up to older people or kids so that’s why they seem older

Answer:

14kg

Explanation:

your equation is wrong ?

it is meant to be c+o=co

we have the mass of c so we calculate the mole and mole =mass\molar mass

molar mass(M) of carbon is 12 so our mole is

6/12=0.5 mol

note the unit of mole is mol

so since from the equation 1c+1o=1co we see that there is an invincible 1 there fore c and co is 1:1 so therefore o.5 mol of c will produce o.5 mol of Co

if the ratio was 1:2 it would have been therefore 0.5 mol of c will make 0.5/2 mol of Co.

but that is not the case so back to what we were saying. note(just saying and example,not part of answer )

to find mass of Co it will be mole = mass/ M

so mass= mole × molar mass and the molar mass of Co is (12)+(16)=28 kg/mol so our mass will be 0.5×28= 14kg

therefore the mass of Co is 14kg

The output of CO2 and other pollutants discharged into the environment can be greatly decreased by the use of synthetic gas and biofuel. Synthetic fuel for commercial flights and fuel for automobiles are still a long way off, though.

When burned in a modern, efficient natural gas power station, natural gas emits 50 to 60 percent less carbon dioxide (CO2) than emissions from a typical new coal plant.

When burning natural gas for energy, less carbon dioxide (CO2) and almost all other air pollutants are released into the atmosphere compared to when burning coal or petroleum products for the same amount of energy.

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The molar mass of unknown gas is 91.93 g/mol

It is Given that

[tex]r_{1}[/tex] of N2 gas =  1.812 x [tex]r_{2[/tex] of unknown gas

r1 = effusion rate of N2

r2 = effusion rate of unknown gas

[tex]r_{1}[/tex] = 1.812  [tex]r_{2[/tex]

[tex]\frac{r1}{r2}[/tex] = [tex]\sqrt[2]{m2 /m1}[/tex] =1.812

where molar mass m1 of N2 = 28 g/mol

molar mass m2 of unknown gas =?

 [tex]\sqrt{m2/28}[/tex] = 1.812

[tex]\frac{m2}{28}[/tex] = [tex]1.812^{2}[/tex]

m2 =  [tex]1.812^{2}[/tex] x 28

m2 = 91.93 g/mol

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The increase in the concentration of H ions by 100 folds, decreases the pH by 2 units.

What is pH?

pH is the measure of the acidity or  basicity of the aqueous solution or any given liquid which can be indicated by numbers ranging between 0-14. 7 is the neutral, anything below 7 is acidic and anything above 7 is taken as basic. It also is a measure of H ions in any given solution.

pH can be calculated as,

pH = -log [H+]

Ration of [H+], [H+2] / [H+1] =100

Change in pH, = pH2 - pH1 = -log [H+2] / [H+1] = -log [100] = -2

Therefore, pH decreases by 2 units, when the H ion concentration is increased by 100 folds. Here negative sign indicates the decrease in the pH.

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Mercury has the highest density of any liquid. At room temperature, it is the only metal that is liquid.

Density is defined as the evaluation of how closely something is packed. The relationship between a substance's mass and the amount of space it occupies is known as its density. The concept of density is crucial because it enables us to predict which substances will float and which ones will sink in a liquid.

The density depends on mass and volume of the solution. It is directly proportional to mass and indirectly proportional to volume. So the substance with more mass will have high density.

Thus, mercury has the highest density of any liquid. At room temperature, it is the only metal that is liquid.

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copper phosphate = c

3 Cu2CO3(OH)2 + 4H3PO4 2Cu3(PO4)2 + 3CO2 + 9H2O

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Measured value 28.7053 cm, which has six significant figures . Round the measurement to four significant figures is 28.71 cm

To count the significant number there are some rules to follow are :

Thus, Measured value 28.7053 cm, which has six significant figures . Round the measurement to four significant figures is 28.71 cm

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Manufacturing companies may verify ingredients and check for contaminants to make sure their products are safe to use by testing the raw materials that go into their sanitizers and disinfectants.

a material or item used to lessen or get rid of harmful elements (like germs) on surfaces. As of the beginning of September, sales with alcohol-based hand sanitizers remained roughly 17% higher than they were during the same time last year.

However, broadly speaking, sanitizers with 60 to 95% alcohol are appropriate. The Center fer Prevention and Control suggests formulations using 80% (percent quantity) ethanol and 75% isopropyl alcohol.

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The volume of the solution is 0.01216 L

What is  volume of a solution ?

A three-dimensional space's occupied volume is measured.  It is frequently measured numerically with SI-derived units (such the cubic meter and litre) or with other imperial units (such as the gallon, quart, cubic inch). Volume and length are related in how they are defined (cubed). The volume of a container is typically thought of as its capacity, or the amount of fluid (gas or liquid) that it could hold, as opposed to the amount of space the container occupies.

Given ,

molarity (M )= 0.400 M

Number of mole  ( n)= 0.0304 mol

Volume (V)=nM

V = 0.400 * 0.0304

V = 0.01216 L

Hence, volume of solution is 0.01216 L

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Answer:  Mg(s) +  H2SO4(aq)  + H2(g)

Explanation:

Magnesium sulfate:

Magnesium sulfate is a chemical compound, a salt with the formula .

Magnesium reacts with dilute Sulphur acid to form Magnesium sulfate and Hydrogen gas.

  Mg(s) +  H2SO4(aq)  + H2(g)

This reaction is a single displacement reaction and also exothermic.

Therefore, the balanced chemical equation for the reaction of magnesium solid with sulfuric acid to form hydrogen gas and magnesium sulfate is  

  Mg(s) +  H2SO4(aq)  + H2(g)

.

Mass of NaOH must you dissolve in enough water to make 5.00 × 10² mL solution in order to create a 0.267 M solution is 5.32 g.

Given that :

molarity = 0.267 M

volume = 5.00 × 10² mL = 0.5 L

molarity expression is given as :

molarity = moles / volumes in L

moles = molarity × volume

moles = 0.267 × 0.5

moles = 0.133 mol

mass of NaOH = moles × molar mass

mass of NaOH = 0.133 mol × 40 g/mol

mass of NaOH = 5.32 g

Thus, Mass of NaOH must you dissolve in enough water to make 5.00 × 10² mL solution in order to create a 0.267 M solution is 5.32 g.

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The chemical potassium chloride is created when one potassium ion and one chlorine ion interact in a specific ratio.

Chemical compounds are made up of several molecules, each of which is made up of an element and its constituent atoms in a specific ratio.

Covalent compounds and ionic compounds are the two different types of compounds. Ionic compounds are created by the total transfer of electrons, while covalent compounds are created by sharing electrons.

In response to our inquiry, sodium is a metal that may give an electron to chlorine in order to form an ionic bond. Because chlorine is more electronegative than sodium, it can easily absorb an electron from the latter.

The equation is balanced when

K⁺ + Cl⁻ → Kcl

Thus, it is clear from this that one potassium atom and one chlorine atom combine to produce the ionic compound potassium chloride.

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The solution is then said to be saturated at 80°C

The amount of a solute that will dissolve in a fixed amount of solvent (often 100 grams of water) at a specific temperature to create a saturated solution is known as its solubility.

To show the solubility at various temperatures, a solubility graph is drawn. One can determine the mass of a solute that can dissolve at particular temperature, whether or not a solution is saturated, and compare the solubilities of various compounds at particular temperatures by looking at a solubility graph. These graphs allow us to determine if the solution is saturated or unsaturated.

We can conclude that the solution is saturated in this scenario because some solids are already not dissolved in the solution.

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It is important to note that the properties of the green gas of the sample can remain the same because the repeating groups of atoms that make up the sample have an identical quantity of atoms and an identical temperature.

Greenhouse gases are defined as gases that absorb and emit radiant energy in the thermal infrared spectrum, causing the greenhouse effect. The following according to scientific studies account for the primary or key greenhouse gases in the atmosphere of the earth:

Note as well that one of the four basic forms in which matter exists is gas. A pure gas can be composed of individual atoms, elemental molecules composed of one kind of atom, or complex molecules composed of many atoms. A gas mixture, such as air, comprises a variety of pure gases.

Gas contracts when pressure is applied to it. When the pressure is discharged, expansion occurs with the gas.

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At this point, most of the available energy is contained in the reduced electron carriers NADH and FADH₂.

Oxidative phosphorylation or electron transfer-associated phosphorylation or terminal oxidation is a metabolic pathway in which cells use enzymes to oxidize nutrients and release chemical energy to produce adenosine triphosphate. This takes place in mitochondria in eukaryotes.

Oxidative phosphorylation often produces the greatest amount of energy produced within the cell. The combination of glycolysis and the citric acid cycle of the Kreb cycle alone yields only four ATPs. Most or most of the remaining energy is stored in the electron carriers NADH and FADH₂.

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A piece of sodium metal is dropped into a calorimeter filled with water, hydrogen gas evolves. The temperature of the mixture rises because As an intensive physical property.

Calorimeter, device for measuring the heat developed throughout a mechanical, electric, or chemical reaction and for calculating the heat ability of substances. Calorimeters have been designed in splendid range.

The frame at better temperature releases heat while the body at lower temperature absorbs heat. The principle of calorimetry shows the regulation of conservation energy, i.e. the overall warmness lost through the new frame is same to the full warmth won by way of the cold body.

The primary ice calorimeters have been built based on Joseph Black's idea of latent warmness, introduced in 1761. Antoine Lavoisier coined the time period calorimeter in 1780 to explain the apparatus he used to measure warmth from guinea pig breathing used to melt snow.

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Answer: Vapors should be contained to the reaction flask

Explanation: O Vapors should be about 1/3 up the condenser height.

According to the principles of gravitation by Newton, every objects attracts every other objects. The gravitational force depends on the quantity of mass and the distance between objects factor that also affects the force of gravity.

Gravitational force is a kind of force by which an object attracts other objects into its centre of mass. This force of attraction depends on the mass of both objects.

Gravity is directly proportional to the mass of the object and inversely proportional to the distance between the objects. Thus force of gravity increases with mass and decreases with distance.

The sentences can be completed as:every objects attracts every other objects. The gravitational force depends on the quantity of mass and the distance between objects factor that also affects the force of gravity.

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Answer:Match the statements for the three principles for Newton's Law of Gravitation.

1 .

Gravitational force

attracts every other object.

2 .

Every object

depends on the quantity of mass.

3 .

Distance between objects

factor that also affects the force of gravity.

please answer quick grrrr betch as neggas

Explanation:

A response has an 80% percent yield.

The real yield is calculated as the theoretical yield divided by the theoretical yield multiplied by 100. % Yield = (Actual Yield % Theoretical Yield Numerous factors, which will be covered in later chapters of the course, can cause a chemical reaction's actual yield to be lower than its theoretical yield.

It is beneficial to have a high yield percentage since it shows that there were fewer contaminants present throughout the experiment and it can improve computation accuracy.

Balanced equation is,

2C₂H₂ + 5 0₂----> 4 CO₂ + 2 H₂O

percent yield of reaction is = moles of product/moles of reactant×100

actual moles of acetylene is = 5/2=2.5

actual moles of Co₂ is = 8/4=2

percent yield of reaction is = 2/2.5×100

percent yield of reaction is = 80%.

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