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Shkiper50 [21]
3 years ago
9

Label the dimensional analysis according to the stoichiometry problem: 12.2 mol of C5H6 combusts to form CO2 and H2O, how many m

oles of Oxygen used? 2C5H6 + 13O2 → 6H2O + 10CO2
Chemistry
1 answer:
GalinKa [24]3 years ago
7 0
CO2 is the answer okkkkkkkkkk
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What is the house off Neutron​
beks73 [17]

Answer: Jimmy Neutron 's House is host to Jimmy Neutron, Judy Neutron, Hugh Neutron, and Goddard. It is located on one side of the street from Cindy Vortex 's Building, both of which are located in Retroville, Texas, the United States of America, Alaska and Hawaii, North America and Planet Earth. Inhabitant: Jimmy Neutron.

Explanation:

6 0
3 years ago
If you dilute 18.8 mL of a 3.5 M solution to make 296.6 mL of solution, what is the molarity of the dilute solution?
hodyreva [135]

Answer:

0.22M

Explanation:

We will be using the law of dilutions. We are simply increasing the amount of solvent to create a larger volume of solution.

So: moles before dilution = moles after dilution & moles_{concentrated} = moles_{dilute}. And M = moles/liter of solution, so if we express this as moles = M x L_{soln}.

That is how we derive the formula we will be using: M_{concentrated} * Vol_{conc} = M_{dilute} * Vol_{dilute}

or

M_{1} * Vol_{1} = M_{2} * Vol_{2}

Applying this formula to our problem, we can substitute the variables with the given values to find the molarity of the dilute solution.

M1 = 3.5M

V1 = 18.8mL

M2 = ?

V2 = 296.6mL

Equation: (3.5M)(18.8mL) = (296.6mL)(M2)

==> 65.8M*mL = 296.6mL * M2

==> M2 = (65.8 M*mL)/296.6mL

==> M2 = 0.22M

8 0
3 years ago
Do you think the Copper would have oxidized if it was completely submerged in vinegar why or why not?
Mama L [17]

Answer: Yes because of the mass of the object

Explanation:

5 0
3 years ago
Phosphoric acid is a polyprotic acid, with p K values of 2.14, 6.86, and 12.38. Which ionic form predominates at pH 9.3
Vlad1618 [11]

Answer:

HPO₄⁻² predominates at pH 9.3

Explanation:

These are the equilibriums of the phosphoric acid, a tryprotic acid where 3 protons (H⁺) are realesed.

H₃PO₄ + H₂O   ⇄   H₂PO₄⁻   +   H₃O⁺   pKa 2.14

H₂PO₄⁻  +  H₂O   ⇄   HPO₄⁻²  +  H₃O⁺  pKa 6.86

HPO₄⁻²  +  H₂O   ⇄   PO₄⁻³   +   H₃O⁺  pKa 12.38

The H₂PO₄⁻  works as amphoterous, it can be a base and acid, according to these equilibriums.

H₂PO₄⁻ +  H₂O   ⇄   HPO₄⁻²  +  H₃O⁺

H₂PO₄⁻ +  H₂O   ⇄   H₃PO₄  +  OH⁻

pH 9.3 is located between 6.86 and 12.38 where we have this buffer system HPO₄⁻² / PO₄⁻³, where the HPO₄⁻² is another amphoterous:

HPO₄⁻ +  H₂O   ⇄   H₂PO₄⁻  +  OH⁻

HPO₄⁻²  +  H₂O   ⇄   PO₄⁻³   +   H₃O⁺

The media from the two pKa, indicates the pH where the protonated form is in the same quantity as the unpronated form, so:

(6.86 + 12.38) /2 =  9.62

Above this pH, [PO₄⁻³] > [HPO₄⁻²].

In conclussion, at pH 9.3, [HPO₄⁻²] > [PO₄⁻³]

6 0
3 years ago
If an atom of sodium has 11 protons, what is its approximate atomic mass?
bagirrra123 [75]
23. The atomic mass is calculated by adding the number of protons and neutrons. However, you cannot guess the number of neutrons. Refer to the periodic table. The atomic mass/mass no of Sodium is 23.
7 0
3 years ago
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