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Maru [420]
3 years ago
9

Wine goes bad soon after opening because the ethanol (CH3CH2OH) dissolved in it reacts with oxygen (O2) gas to form water and aq

ueous acetic acid (CH3COOH), the main ingredient in vinegar. Calculate the moles of oxygen needed to produce 0.080 mol of water. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits.
Chemistry
1 answer:
andrezito [222]3 years ago
7 0

The number of mole of oxygen needed is of 0.080 mole.

To solve this question, we'll begin by writing the balanced equation for the reaction. This is illustrated below:

<h3>CH₃COOH + 2O₂ —> CO₂ + 2H₂O</h3>

From the balanced equation above,

2 moles of O₂ reacted to produce 2 moles of H₂O.

Finally, we shall determine the number of mole of O₂ needed to produce 0.080 mole of H₂O. This can be obtained as follow:

From the balanced equation above,

2 moles of O₂ reacted to produce 2 moles of H₂O.

Therefore,

0.080 mole of O₂ will also react to produce 0.080 mole of H₂O.

Thus, 0.080 mole of oxygen, O₂, is needed for the reaction.

Learn more: brainly.com/question/1563415

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Explanation:

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4 years ago
How can a redox reaction be used as a source of electrical energy?
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A redox reaction be used as a source of electrical energy only when two half-reactions are physically separated. <span>The electrons that are released at the anode flow through the wire, producing an electric current. Galvanic cells therefore transform chemical energy into electrical energy that can then be used to do work.</span>
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4 years ago
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Calculate the concentration (M) of sodium ions in a solution made by diluting 25.0 mL of a 0.765 M solution of sodium sulfide to
Yuri [45]

<u>Given:</u>

Concentration of Na₂S = 0.765 M

Volume of Na₂S solution = 25.0 ml = 0.025 L

Final total volume = 225 ml = 0.225 L

<u>To determine:</u>

The concentration of Na+ ions

<u>Explanation:</u>

# moles of Na₂S = 0.765 * 0.025 = 0.0191 moles

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# moles of Na⁺ ions = 2*0.0191 = 0.0382 moles

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Ans: [Na⁺] = 0.169 M

5 0
3 years ago
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At 20 degrees Celsius the density of mercury is 13.6 g/cm cubed. What is the mass of 50.0 ml of mercury at 20 degrees Celsius?
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Answer:

680g of mercury is the mass of the sample of mercury.

Explanation:

Density is an unit used to relates the mass of an object per unit of volume.

For example, in the problem, the density of mercury is 13.6g/cm³, as cm³ is equal to milliliters, mL, the density is: 13.6g/mL.

If you have 50.0mL of mercury, the mass is:

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<h3>680g of mercury is the mass of the sample of mercury.</h3>
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H. Identity of unknown metal
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Answer:

you can identify an unknown substance by measuring its density and comparing your results to a list of known densities. Density=mass/volume. Assume that you have to identify an unknown metal. You can determine the mass of the metal on a scale.

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