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melomori [17]
2 years ago
14

How many grams of calcium phosphate are theoretically produced if we start with 3.40 moles of calcium nitrate and 2.40 moles of

lithium phosphate?
Chemistry
1 answer:
rosijanka [135]2 years ago
3 0

The theoretical yield of Ca₃(PO₄)₂ is 372 g.

<h3>Calculation:</h3>

It is based on limiting reactants. The limiting reactant is the one that yields the fewest moles in the final product. The reaction ends when it runs out.

A balanced equation is given as:

3Ca(NO₃)₂ + 2Li₃PO₄ → 6LiNO₃ + Ca₃(PO₄)₂

Multiply the moles of each reactant by the mole ratio between it and Ca₃(PO₄)₂ in the balanced equation, so that the moles of the reactant cancel, leaving moles of Ca₃(PO₄)₂.

3.40 mol Ca(NO₃)₂ × 1 mol Ca₃(PO₄)₂/3 mol Ca(NO₃)₂ = 1.13 mol Ca₃(PO₄)₂

2.40 mol Li3PO4 × 1 mol Ca₃(PO₄)₂/2 mol Li₃PO₄ = 1.20 mol Ca₃(PO₄)₂

Ca(NO₃)₂ is the limiting reactant.

Now, calculate the mass of 1.20 mol Ca₃(PO₄)₂.

Molar mass Ca₃(PO₄)₂ = 310.174 g/mol

1 mol Ca₃(PO₄)₂ = 310.174 g/mol

1.20 mol Ca₃(PO₄)₂ = 1.20 mol × 310.174 g/mol

                                = 372 g

Hence, the theoretical yield of Ca₃(PO₄)₂ is 372 g.

Learn more about limiting reactants here:

brainly.com/question/28170241

#SPJ4

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belka [17]
Hello, let me break this down for you! :)
A is your energy of your reactants, B is your activation energy, so the total value could be found from B-Y. C is the value of your energy of your products. X is your delta H value. So in this, your products are higher energy than the reactants, so H is + and e2-E1 is positive so E2 >E1
Therefore your answers would just be <span>E2 > E1 and
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5 0
4 years ago
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Some fuel cells are powered by hydrogen. Scientists are looking into the decomposition of water (H2O) to make hydrogen fuel with
skad [1K]

A.  Decomposing water requires a high activation energy.

Explanation:

In decomposing water to release hydrogen gas to make fuel cells, the process requires a very high activation energy.

                             2H₂O ⇆ 2H₂  + O₂

 This is the overall reaction. O-H must be broken to release free hydrogen to produce hydrogen gas.

The O-H bond is a very strong force of attraction that requires a high activation energy to overcome.

  • The activation energy is the energy barrier that must be overcome before a reaction takes place.
  • The sun is a renewable source of energy.
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4 0
3 years ago
The burning of ethane produces both co2 and H2O. if 400 ml of CO2 is produced at 30°C and 740 torr, what volume of water vapor w
Over [174]

The volume of water vapour would be produced at 19°C and 780 torr is 548.5mL.

If 400 ml of CO2 is produced at 30°C at 740 torr, then number of moles can be calculated as:

By using ideal gas equation:

P1V1 = N1R1T1

P1 = pressure = 740torr

V1 = 400 ml = volume of CO2

R = Gas constant = 8.314

T = 273+30 = 303 k

740×400 = N1×8.314×303

N1 = (740×400) /(8.314×303) =117.5.

Chemical equation

C2H6 ---- 2CO2 + 3H2O.

As we noticed from the equation that

2 moles of CO2 = 3 moles of H2O

1 moles of CO2 × 1 moles of H2O

Then N2 = 117.5 moles of CO2 = 3/2 × 117.5 moles of H2O

By using ideal gas equation:

P2V2 = N2RT2

V2 = 3/2 × 117.5 × 8.314 × 292/ 780

= 548.5ml.

Thus, we found that the volume of water vapour would be produced at 19°C and 780 torr is 548.5mL.

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3 0
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Answer:

B. overlap of two d orbitals end to end overlap of p orbital.

Explanation:

Sigma bonds are the strongest type of bonds and they are covalent which is due to the direct or end to end overlap of orbitals. The symbol σ is used to adequately describe the bond that exists in a molecule.

In organic molecules, a single C-C bond is a sigma bond while a multiple C-C bond is composed of one sigma bond together with pi or other bonds that is a double bond has one sigma plus one pi bond, and a triple bond has one sigma plus two pi bonds.

Examples include: s-s orbital, pz-pz orbitals, dz-dz orbital and hybrids like sp-p etc.

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<span>some elements would be Beryllium, Barium, Magnesium, and Strontium</span>
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