In ironmaking, iron metal can be separated from iron ore (Fe2O3) by heating the ore in a blast furnace in the presence of coke, which is a form of carbon: 2 Fe2O3(s) + 3 C(s) → 4 Fe(s) + 3 CO2(g) If 1000 kg of iron ore and 120 kg of coke are heated in a blast furnace, determine the limiting reactant, the theoretical yield of iron metal, and the theoretical yield of carbon dioxide.

Answer:

magnetite

Explanation:

proportion of iron in haematite = 3.5/5 x 100% = 70%

proportion of iron in magnetite = 7.2/10 x 100% = 72%

A. The limiting reactant is copper (I) oxide

B. The theoretical yield of copper is 384 grams

C. The percent yield would be  96.56%

D. The amount of excess reagent that remains would be 103 grams.

The balanced equation of the reaction is as follows: \(2Cu_2O + Cu_2S -- > 6Cu + SO_2\)

The mole ratio of the reactants is 2:1.

Mole of 286.2 g of copper (I) oxide = 286.2/143 = 2 mol

Mole of 262.2 g of copper (I) sulfide = 262.2/159 = 1.65 mol

Going by the mole ratio, copper (I) oxide is limiting. The actual amount of copper (I) sulfide required would be:

1/2 x 1 = 1 mol

Thus, excess copper (I) sulfide = 1.65 - 1 = 0.65 mol

0.65 mol = 0.65 x 159 = 103 grams

To get the theoretical yield of copper: mole ratio of copper (I) oxide and copper produced = 1:3

2 mole of copper (I) oxide = 6 moles of copper

6 mol copper = 6 x 64 = 384 grams

If the actual yield is 370.8 grams:

Percent yield = 370.8/384 x 100

                      = 96.56%

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Answer:

True

Explanation:

Nouns are words we use to name everything that surrounds us, for example, people, animals, places, things, etc.

Concrete nouns are nouns we use to name things we can detect by our senses (sight, hearing, taste, smell, and touch). The given sentence contains two concrete nouns - friend and speech.

Abstract nouns are nouns we use to name things that are not concrete, things we can't detect by our senses, for example, qualities, feelings, concepts, ideas, etc. The given sentence contains one abstract noun - democracy.

The expected observations for the chemical reaction involving lead nitrate and potassium iodide are as follows as per theory.

Before the reaction, you'd have two separate solutions:

Lead Nitrate solution: This is typically a clear, colorless solution.

Potassium Iodide solution: This is also usually a clear, colorless solution.

REACTION OBSERVATIONS:

As soon as you combine these two solutions, a chemical response takes place, resulting in the almost instantaneous development of a yellow precipitate. Lead iodide is a substance that cannot be dissolved in water.

FINAL APPEARANCE:

The final mixture would have a yellow precipitate (lead iodide) suspended in the solution.

The reaction leads to the formation of lead iodide, a substance with distinctive properties, suggesting a chemical change. The presence of this novel compound is indicated by the yellow hue of the precipitate.

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The wavelength of light that should be employed for nickel(II) ion is roughly 400–500 nm, according to the absorbance spectra displayed. This is due to the graph's observation of an absorbance peak with a maximum of roughly 0.8 in this region.

The plot of a substance's absorbance as a function of light wavelength is called the absorbance spectrum. The absorbance spectrum in this instance is for the nickel(II) ion.

The peak in absorbance shows that the nickel(II) ion's electrons are most easily moved from a lower energy state to a higher energy one by this particular wavelength of light. As a result, more light is absorbed, increasing the measured absorbance.

Depending on the particular experiment and the tools being used, a specific wavelength of light should be employed. However, judging by the absorbance spectrum displayed, measuring nickel(II) ion absorbance should be possible at a wavelength of roughly 400–500 nm.

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Answer:

I'd say maybe Dangerous? I hope this helps

Answer:

golden is sometimes referred to as shiny and beatitful

Explanation:

Answer:

Yo i need this too someone please respond to this

Explanation:

ppppppllllllllllleeeeeeeeeeaaaaaaasssssseeeeeee

At pOH value  of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)

In this question we will apply the formula

      pH +pOH = 14 . . . . . . . . . . . . .(1)

where pH = concentration of [\(H^{+}\) ] ion

pOH = concentration of [\(OH^{-}\) ] ion

As per the question

pOH =6.0

Putting the value of pOH in equation (1) we get the value of pH

              pH + 6.0 =14

             pH = 14 -6.0

             pH  = 8.0

 The value of pH if the pOH value is 6.0 is 8.0

To find the concentration of \(H^{+}\) ion we will use the following formula

This is calculated by the formula

                                 [\(H^{+}\)} = \(10^{-pH}\)

where we will write the values of pH

Hence the concentration of [\(H^{+}\)} ion is \(10^{-8}\)

Therefore at  pOH of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)

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The complete question is -

What is the pH value and concentration of [\(H^{+}\) ] ion of the following if the pOH value of the solution is 6.0 ?

The theoretical yield of Acetylsalicylic acid is found out to be: 3.01 grams.

The limiting reagent is a substance that prevents a chemical reaction from occurring completely.

When a limiting reagent is used in a chemical reaction, the atoms, molecules, or ions of the other reactant that it (the limiting reagent) reacts with will either stay free or unreacted.

Popular compounds called acids and bases interact with one another to create salt and water. The Latin word "acere," which meaning "sour," is where the term "acid" originates.

According to the problem, we have 2.31 grams of salicylic acid. We need to determine the theoretical yield of acetylsalicylic acid.

The molar mass of salicylic acid is 138.12 g/mol. Therefore, the number of moles of salicylic acid we have is:

n = mass / molar mass

n = 2.31 g / 138.12 g/mol

n = 0.0167 mol

According to the balanced equation, 1 mole of salicylic acid reacts with 1 mole of acetic anhydride to produce 1 mole of acetylsalicylic acid. Therefore, the number of moles of acetylsalicylic acid produced is also 0.0167 mol.

The molar mass of acetylsalicylic acid is 180.16 g/mol. Therefore, the theoretical yield of acetylsalicylic acid is:

mass = n x molar mass

mass = 0.0167 mol x 180.16 g/mol

mass = 3.01 g

Therefore, the theoretical yield of acetylsalicylic acid is 3.01 grams.

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Answer:

The correct answer is 0.52 moles.

Explanation:

Based on the given question, 37 grams of magnesium reacts with 38 grams of HCl to produce MgCl2 or magnesium chloride. The reaction is:  

Mg (s) + 2HCl (aq) ⇒ MgCl2 (aq) + H2 (g)

There is a need to find the theoretical yield in moles of MgCl2. The formula for calculating the no. or moles is mass/molar mass. Therefore, moles of magnesium is 37/24 = 1.54 and moles of HCl will be 38/36.5 = 1.04.  

From the reaction it is clear that one mole of magnesium reacts with two moles of HCl, as lesser quantity of HCl is present in the given case, therefore, HCl will be the limiting reagent.

Now theoretical moles of magnesium chloride will be,  

= moles of HCl / 2

= 1.04 / 2  

= 0.52 moles

The correct answers to the fill in the blank problems given above are as follows:

Mitotic phase is the part of the cell cycle that divides the material

This process happens only in somatic cells, also is known as body cells.

There are 4 parts of this process:

Mitosis can simply be defined as a special process of cell division in which a single cell divides into two different identical daughter cells.

Aside, mitosis; another major cell division which occurs in the cells of living organisms is the meiosis. Below are the phases involved in mitotic cell division, these are as follows:

In conclusion, it can be deduced from the explanation given above that mitosis is a process of cell division.

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Answer:

2.07459

Explanation:

this is the correct answer.

The relationship between a reaction's products and reactants with regard to a certain unit is expressed by the equilibrium constant, K.

Thus, When a reaction is homogeneous, all of the products' and reactions' states of matter are the same (the prefix "homo" means "same"). The solvent typically controls the reaction's overall state of matter.

When a reaction is in chemical equilibrium, the concentrations of the reactants and products do not significantly fluctuate over time. A double arrow between the reactants and products denotes these reversible reactions.

As described, this reaction is endothermic, therefore when heat is added, the equilibrium constant moves to the right.  In turn, this turns the solution blue.  Cl- is drawn out of solution by the addition of AgNO3.

Thus, The relationship between a reaction's products and reactants with regard to a certain unit is expressed by the equilibrium constant, K.

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Answer:

Anions. Some atoms have nearly eight electrons in their valence shell and can gain additional valence electrons until they have an octet. When these atoms gain electrons, they acquire a negative charge because they now possess more electrons than protons. Negatively charged ions are called anions.

Explanation:

Can you give me brainliest?

Answer:

Explanation:

From the question, osmotic pressure exerted by a solution is equal to the MOLARITY multiplied by the absolute TEMPERATURE and the GAS CONSTANT r.

Let P = osmotic pressure,

C = molarity, then

T = absolute temperature

r=gas constant

The Osmotic pressure Equation exerted by a solution \(P=C*T*r\)

\(P=CTr\)

Then it was required in the question to write an equation that will let you calculate the molarity c of this solution, and this equation should contain ONLY symbols

C= molarity of the solution

P=osmotic pressure

r = gas constant

T= absolute temperature

\(C=P/(rT)\)

The equation that will let us calculate the molarity c of this solution = \(C=P/(rT)\)

Answer:

1.03 x 10²³ atoms NaCl

Explanation:

To find the amount of table salt (NaCl) in atoms, you need to (1) convert grams to moles (using the molar mass) and then (2) convert moles to atoms (using Avogadro's Number). It is important to arrange the ratios/conversions in a way that allows for the cancellation of units.

(Step 1)

Molar Mass (NaCl): 22.99 g/mol + 35.45 g/mol

Molar Mass (NaCl): 58.44 g/mol

10 grams NaCl                1 mole
------------------------  x  -----------------------  =  0.17 moles NaCl
                                   58.44 grams

(Step 2)

Avogadro's Number:

6.022 x 10²³ atoms = 1 mole

0.17 moles NaCl           6.022 x 10²³ atoms
--------------------------  x  --------------------------------  =  1.03 x 10²³ atoms NaCl
                                                 1 mole

According to percent yield and stoichiometry, the mass of PCl₅  formed when 61.3 g of Cl₂ reacts with PCl₃ is 180.04 g when 61.3 g of Cl₂ reacts with PCl₃.

Percent yield is defined as the ratio of actual yield to the theoretical yield multiplied by 100. If the actual and theoretical yield are same then the percent yield is 100%.If actual yield is less than the theoretical yield then the percent yield is less than 100%.Reason of this condition arising is the incompletion of reaction or loss of sample during recovery process.

In the given example,as 70.90 g chlorine gives 208.24 g  PCl₅  then according to stoichiometry,61.3 g of chlorine will give 61.3×208.24/70.90=180.04 g.

Thus, 180.04 g PCl₅ is formed when 61.3 g of Cl₂ reacts with PCl₃.

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Answer:

A) bring the magnet close to the plastic ball and note any motion of the ball toward the magnet

Explanation:

Answer:

Option A. 250 mL

Explanation:

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

Molarity of NaCl = 3 M

Mass of NaCl = 43.83 g

Volume of water =..?

Next, we shall determine the number of mole in 43.83 g of NaCl. This can be obtained as follow:

Mass of NaCl = 43.83 g

Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol

Mole of NaCl =?

Mole = mass/molar mass

Mole of NaCl = 43.83/58.5

Mole of NaCl = 0.749 mole

Next, we shall determine the volume of water required to prepare the solution as follow:

Mole of NaCl = 0.749 mole

Molarity of NaCl = 3 M

Volume of water =..?

Molarity = mole /Volume

3 = 0.749 /volume

Cross multiply

3 × volume = 0.749

Divide both side by 3

Volume = 0.749/3

Volume = 0.25 L

Finally, we shall convert 0.25 L to millilitres (mL). This can be obtained as follow:

Recall:

1 L = 1000 mL

Therefore,

0.25 L = 0.25 L × 1000 mL / 1 L

0.25 L = 250 mL

Therefore, 0.25 L is equivalent to 250 mL.

Thus, the volume of water needed to prepare the solution is 250 mL

Transient stage is also called the unstable stage and in this stage, there is a gradual decrease in deformation rate to a definite constant value.

A transient state is when a process variable or variables changes, but before the system reaches a steady state.

Transient time is the time it takes for a circuit to change from one steady state to the next.

Therefore, Transient stage is also called the unstable stage and in this stage, there is a gradual decrease in deformation rate to a definite constant value.

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Answer:

c

Explanation:

Answer:

True. the density of water is 1.0 mg

The mass of the solid will be 114.7 g.

The density of a substance is given as the ratio of its mass and its volume.

Also, a solid will always displace its own volume in a liquid.

Mass of liquid solvent = 47.3 g

Density of liquid solvent = 0.865 g/mL

Recall that: density = mass/volume

Volume of liquid solvent = mass/density

                                     = 47.3/0.865

                                      = 54.7 mL

Volume of solid + liquid solvent = 90.0 mL

Volume of solid = 90.0 - volume of liquid solvent

                            = 90.0 - 54.7

                               = 35.3 mL

Density of solid = 3.25 g/mL

Mass of solid = density x volume

                       = 3.25 x 35.3

                          = 114.7 g

The mass of the solid is 114.7 g.

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Answer:

0.11 m

Explanation:

H Ci + NaOH H2 O+ NaC1

by titration

0.0025 L of 0.13 mol Na OH = 0.00325 Mol NaOH

L

0.00325 Mol NaOH 1 Mol Hcl/I Mol NaOH = 0.00325 Mol hcl

now 0.00325 mol Hcl/ 0.030 L = 0.0108 M hcl