Determine the ratio of moles of iron actually used to moles of new product actually formed. Does this molar ratio agree with the ratio from the balanced chemical equation?​


equation 1.50g Cu 1 mole cu ÷ 63.5g Cu Fe ÷1 Cu 55.8gFe ÷ 1 mole = 1.32g Fe

Answer:

B, C, D, and E

Explanation:

The percent yiled shows the extent of conversion of reactants to products. The percent yiled here is 83.1%.

The percent yiled in a reaction is calculated as te ratio of the actual yield to the theoretical yiled multiplied by 100.

Hence the balanced reaction equation is; Fe3O4 + 4CO → 3Fe + 4CO2.

Number of moles of Fe3O4  =  70.0 g/232 g/mol = 0.3 moles

Number of moles of CO = 70.0 g/28 g/mol = 2.5 moles

If 1 mole of Fe3O4  reacts with 4 moles of CO

x moles of Fe3O4 reacts with 2.5 moles of CO

x = 0.6 moles

Hence, Fe3O4  is the limiting reactant.

Now;

1 mole of Fe3O4 yileds 3 moles of Fe

0.3 moles of Fe3O4 yileds 0.3 moles * 3 moles/1 mole = 0.9 moles

Mass of Fe produced = 0.9 moles  * 56 g/mol = 50.4 g

Percent yield = 41.9 g/ 50.4 g * 100/1 = 83.1%

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Answer:

4.9 kPa

Explanation:

Dalton's law of partial pressures states that the total pressure of a mixture of gases is the sum of the partial pressures of the individual gases.

In other words:
[tex]\displaystyle P_T = P_\text{O$_2$} + P_\text{N$_2$} + P_\text{He}[/tex]

The total pressure is 101.1 kPa. The partial pressure of He is 80.1 kPa. The partial pressure of N₂ is 16.2 kPa. Substitute and solve for O₂:

[tex]\displaystyle \begin{aligned} (101.2\text{ kPa}) & = P_\text{O$_2$} + (16.2\text{ kPa}) + (80.1\text{ kPa}) \\ \\ P_\text{O$_2$} & = 4.9\text{ kPa}\end{aligned}[/tex]

In conclusion, the partial pressure of oxygen in the balloon is 4.9 kPa.

A chemist is using a solution of HNO₃ that has a pH of 3.75. what is [H⁺] for the solution is 1.7 × 10⁻⁴M.

Concentration of H⁺ ion will be calculated by using the below equation of pH as:

pH = -log[H⁺]

or [H⁺] = [tex]10^{-pH}[/tex]

Given that, pH = 3.75

So concentration of H⁺ ion will be calculated as:

[H⁺] = [tex]10^{-3.75}[/tex]

[H⁺] = 1.7 × 10⁻⁴M

Hence concentration of H⁺ ion is 1.7 × 10⁻⁴M.

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Answer:

[tex]pH = -log(H3O^+) = -log(8.52E-5) = 4.+[/tex], my guess is about 4.1

Explanation:

hope this helps! :)

Answer:

See below

Explanation:

Isotopes:

Example:

[tex]\rule[225]{225}{2}[/tex]

Any group of an element's isotopes will always contain an equal amount of protons and electrons. Their individual nuclei's capacity for holding neutrons will vary. The correct options are B, D, and F.

A set of atoms with the same atomic number but differing masses is known as an element's isotope. This indicates that the number of protons in each atomic nucleus and the number of electrons in the electron cloud of each isotope of an element is the same.

Some isotopes experience radioactive decay because of their unstable atomic nucleus. These isotopes are known as radioisotopes (or radionuclides) because they are radioactive by nature. Carbon-14, tritium (hydrogen-3), chlorine-36, uranium-235, and uranium-238 are a few examples of radioactive isotopes.

Thus the correct options are B, D, and F.

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Answer:

Rain,Hail,Snow,sleet. Hope this helped you out!

Answer:

The Heat of a reaction is given as the heat content/heat of formation/enthalpies of the products minus the heat content/heat of formation/enthalpies of the reactants. If the potential energy diagram has the product(s) having a higher potential energy than the reactant(s), then the reaction is an endothermic reaction (this is why the reaction absorbs heat from the surroundings to try to make up for the lack of potential energy of the reactants) and the sign on the enthalpy change is visibly positive since H(products) > H(reactants) If the potential energy diagram has the reactant(s) having a higher potential energy than the product(s), then the reaction is an exothermic reaction (this is why the reaction releases heat to the surroundings to try to take care of the higher potential energy of the reactants) and the sign on the enthalpy change is visibly negative since H(reactants) > H(products).

Explanation:

hope it helps:)

74 mph (64 KT)

Explanation:

when the wind exceeds 74 mph (64 KT), the storm is considered to be a hurricane.

Among the given aqueous solutions, the solution with a significantly different pH from the rest is 0.1 M HC₂H₃O₂ (acetic acid).Option C

H₂SO₄ (sulfuric acid), HNO₃ (nitric acid), and HCl (hydrochloric acid) are strong acids that dissociate completely in water. They produce a high concentration of H₃O⁺ ions, resulting in a low pH. Acetic acid, on the other hand, is a weak acid that only partially dissociates in water. It produces a smaller concentration of H₃O⁺ ions, resulting in a higher pH compared to the strong acids.

When a strong acid like HCl, H₂SO₄, or HNO₃ is dissolved in water, it completely dissociates to release H₃O⁺ ions. The resulting solution will have a very low pH, usually close to 0. However, acetic acid (HC₂H₃O₂) only partially dissociates, and the concentration of H₃O⁺ ions is lower. As a weak acid, it has a higher pH compared to strong acids, typically around 2.4.

In summary, among the given options, the aqueous solution of 0.1 M HC₂H₃O₂ (acetic acid) will have a significantly different pH from the rest, with a higher pH value due to its weak acid nature.

Option C

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It is true that decomposers such as bacteria recycle dead tissue into reusable chemicals for other producers, which are then eaten by consumers.

Nutrient recycling is the process by which essential elements in the ecosystem are in transition between abiotic and biotic factors.

In an ecosystem, the following groups of organisms exists:

Decomposers are responsible for breaking down dead tissues of living organisms leading to the release of nutrients to the soil. These nutrients are used by producers, which are then eaten by consumers.

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The question relates to Blood Splatter Analysis and relates to both law and Forensic science.

The three key dates in Blood Splatter History and what those dates mean to evidence today are:

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Answer:

Which term best describes this reaction?

         CH₃  H         ┌ CH₃   H ┐

           │     │         │  │       │  │

       n C ═ C  ➝    ├ C ── C ┤

          │      │         │  │       │  │

          H     H         └  H      H ┘

❌ A) condensation polymerization

❌ C) hydrohalogenation

❌ D) hydration

I Took Question Test And Have Nice Day.

Answer:

The best answer out of the 4 Would be A. Addition

Explanation:

I took the Test.

true

Answer:

A. body muscles

The pressure needed to pump blood back to the heart is produced by the body muscles .

The characteristic of a strong base is that it removes H⁺ ions from solution.

Strong bases are those substance which have a pH range in between the value of 7.1 to 14.

So, strong bases removes H⁺ ion from the solution.

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Answer:

It removes H+ ions from solution.

Explanation:

i got it right

2.62J of energy will be required to warm a silver metal from a temperature of 25°C to 27.5°C.

The energy required in a calorimetry can be calculated using the following formula:

Q = m × c × ∆T

Where;

According to this question, 4.37 g of silver should be heated from 25°C to 27.5°C. The heat required is as follows:

Q = 4.37 × 0.24 × (27.5 - 25)

Q = 1.0488 × 2.5

Q = 2.62J

Therefore, 2.62J of energy will be required to warm a silver metal from a temperature of 25°C to 27.5°C.

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Answer:

multiply (make new cells)

Answer:

The correct answer is A and D.

Explanation:

Please I want brainliest.

Reason:

The size of the ions follows the order:

Negatively charged ion > Neutral atom >

Positively charged ion

This is because of the size of ions increases when the electrons are added to the outermost shell of an atom.

This happens due to the increase in

electron-electron repulsion.

Moreover, when the electrons are removed from an atom, then the affective nuclear charge that is experienced by the outermost electron increases.

Thus the size of the positively charged ion is least.

Answer: A

Explanation:

trust me i did it

Answer:

Eye Health Problems.

Vision-Related Accidents.

Deterioration of Materials.

Explanation:

ANSWER DISCLAIMER; IF DISSATISFIED, REPORT THIS ANSWER AS SOON AS POSSIBLE:

Answer:

The motion of the gas particles is random and in a straight-line.

Explanation:

According to the kinetic hypothesis, a gas is made up of a huge number of submicroscopic particles (atoms or molecules) that are all in continual, random motion. The swiftly moving particles clash with one another and with the container's walls on a regular basis. The phrase ideal gas refers to a hypothetical gas made up of molecules that adhere to a few rules: The molecules of an ideal gas do neither attract or repel one another. The sole interaction between perfect gas molecules would be an elastic collision when they collided or an elastic collision with the container's walls.

The true statemments that reflect the nature of the compound are statements (i) and (ii).

The molecule acrylonitrile has thre carbon and hydrogen atoms and one nitrogen atom. The  c—c single bond results from overlap between an sp hybrid and an sp 2 hybrid. Also, there are two unhybridized p orbitals on the N atom.

Hence; among  the options, the true statemments that reflect the nature of the compound are statements (i) and (ii).

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Answer:

No, not all are harmful.

Explanation:

There are bacterias that are harmful, yes, but millions, maybe even billions are helpful. Probiotics, healthy bacteria, as some like Lactobacilli and Bifidobacterium. There are a lot more, but just these two examples are helpful. Lactobacili is helpful with your digestive system. Bifidobacterium is geared towards your mouth and the vaginal area of women in mammals, like humans.

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I hope this helps!

-No one

the answer will be 190

Explanation:

because R1= 0.5*0.5*8

=190

Answer:

Your answer would be:
B.) 1.0 × 10–5M

Explanation:

Have a great rest of your day
#TheWizzer

Answer:

The answer is B.

Explanation:

pretty quite, when everyones acc gets deleted SMH -;-

Answer:

The temperature of the solute/solvent without any external effect would decrease.

Explanation:

As the bonding between the solute particles is really strong, therefore a large amount of energy is required to overcome these forces. So that the new bonding between the solute and solvent is created.

In order to achieve this, there will be a lot of energy required and that is through the heating process. So the solution will require energy so the solute will dissolve fully either by provision of external force i.e stirring or by heating.

Explanation:

Answer:

C

Explanation:

As the size of a star increases, luminosity increases. If you think about it, a larger star has more surface area. That increased surface area allows more light and energy to be given off.

Answer:

I would write "terrestrial/lives on land during all life stages" between the frog and pigeon branches

Explanation:

Jaw evolution has started with fish, so i'd place that before the perch, evolution of four limbs is next and I would plate it between the perch and the frog. Evolution of an egg has ensured that organisms remain terrestrial during all stages of life and don't need to rely on water to lay their eggs. So I would place that between the frog and the pigeon. True mammary glands and true hair, as we know it formed on mammals so i'd place that between the pigeon and the rats (although synapsids evolved similar structures long before birds even existed). And lastly, I would place "walking on two legs" between rats and human branches. Because our ancestors evolved bipedalism relatively late.