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4 years ago

A redox reaction will occur at 298 K when zinc metal is placed in a solution that is 0.5M Fe(NO3)3. Is this true or False.

Chemistry

1 answer:

Anettt [7]4 years ago

7 0

Answer:

True

Explanation:

Fe³⁺ is an oxidizing agent with E° = +0.77V. Zn metal is a reducing agent with E° = -0.76V. This is a "downhill" reaction, where the oxidizing agent has a higher E° than the reducing agent. Therefore, the reaction is spontaneous.

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A compound is analyzed and found to be 50% sulfur and 50% oxygen. If the total amount of the sulfur oxide is 12.5 g, how many gr

il63 [147K]

Answer:

25.0g is the mass of sulfur

Explanation:

The sulfur and the oxygen are 50:50. That means there is 1 mole of S per mole of O.

To solve this question we need to convert the mass of O to moles, as moles of O = Moles of S, we can find the moles of S and its mass:

<em>Moles O = Moles S:</em>

12.5g O * (1mol / 16g) = 0.781 moles

0.781 moles * (32g / mol) =

<h3>25.0g is the mass of sulfur</h3>

7 0

3 years ago

How do you solve pH and pOH?

ehidna [41]

Picture credit - Google images

whenever you have problem for ph and poh just make this table and go from there .

Ph = 14 - Poh

Poh = 14- Ph

8 0

4 years ago

Ethanol, C2H6O, is most often blended with gasoline - usually as a 10 percent mix - to create a fuel called gasohol. Ethanol is

ch4aika [34]

Answer:

4054 kcal of heat is released during complete combustion of 354 g of octane.

Explanation:

Heat of combustion of 1 mol of octane is $1.308\times 10^{3}$ kcal

Molar mass of octane = 114.23 g/mol

We know, no. of moles = (mass)/(molar mass)

So, $1.308\times 10^{3}$ kcal of heat is released during complete combustion of 114.23 g of octane.

So, amount of heat is released during complete combustion of 354 g of octane = $(\frac{1.308\times 10^{3}}{114.23})\times 354$ kcal = 4054 kcal

Hence 4054 kcal of heat is released during complete combustion of 354 g of octane.

5 0

3 years ago

Hello! Everyone:) I was just wondering if you can help me with my test. <br><br> Points: 99

AVprozaik [17]

Answer:

By their properties ;)

Explanation:

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2 years ago

How could you safely determine if a base is stronger than an acid? Compare the taste of the base and the acid. Use a conductivit

Gnoma [55]

Use blue litmus paper. This is an indicator that can safely determine whether it is a base or an acid by changing color in response to the substance. This color indicates whether it is an acid or a base. Refer to the pH scale to see if the substance is basic or acidic.

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3 years ago