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algol13
2 years ago
12

What happens to iron oxide during decomposition

Chemistry
1 answer:
elena55 [62]2 years ago
4 0

Answer:

it gets reduced from a +3 oxidation to a 0.

Explanation:

the decomposition of iron oxide to elemenTal can be represented by the following equation: iron oxide (Fe203), the oxidation state of iron is +3 while that of oxygen is -2. therefore, the above reaction is a redox (reduction oxidation reaction)

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A mixture contains NaHCO3 together with unreactive components. A 1.75 g sample of the mixture reacts with HA to produce 0.561 g
Lynna [10]

Answer:

\%NaHCO_3=61.2\%

Explanation:

Hello.

In this case, since the undergoing chemical reaction is only between the sodium bicarbonate and the acid HA:

NaHCO_3+HA\rightarrow NaA+H_2O+CO_2

For 0.561 g of yielded carbon dioxide (molar mass 44 g/mol), the following mass of sodium bicarbonate (molar mass 84 g/mol) that reacted was:

m_{NaHCO_3}=0.561gCO_2*\frac{1molCO_2}{44gCO_2} *\frac{1molNaHCO_3}{1molCO_2} *\frac{84gNaHCO_3}{1molNaHCO_3} \\\\m_{NaHCO_3}=1.071g

Considering the 1:1 mole ratio between CO2 and NaHCO3. Finally, the percent by mass of NaHCO3 is computed by dividing the mass of reacted NaHCO3 and t the mixture:

\%NaHCO_3=\frac{1.071g}{1.75g}*100\%\\ \\\%NaHCO_3=61.2\%

Best regards.

5 0
3 years ago
5. Forces (or actions) always come in pairs. They<br> are____and_____
azamat

Answer:

equal and opposite

Explanation:

The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object

3 0
2 years ago
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Brrunno [24]

Yes

Explanation:

On 15 February 2013, an asteroid entered Earth's atmosphere over Russia as a fireball and exploded above the city of Chelyabinsk during its passage through the Ural Mountains region.

6 0
3 years ago
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What causes a fire tornado to form out of a wildfire??
velikii [3]
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If a fast-moving car making a loud noise approaches and moves past the person, what will happen as the distance between the two
Pani-rosa [81]

Correct answer choice is :


D) The pitch of the sound being heard by the person will appear to be lower than the pitch of the source.


Explanation:


The sensation of a frequency is usually related to as the pitch of a sound. A high pitch sound relates to a high-frequency sound wave and a low pitch sound relates to a low-frequency sound wave. Whereas loudness depends on the power of the wave. In overall, the pitch is the cause behind the variation in voice quality for several people. The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves.

5 0
3 years ago
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