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Zinaida [17]
3 years ago
10

What type of change occurs when rust on a nail a. chemical change b. physical change

Chemistry
1 answer:
Korvikt [17]3 years ago
5 0

Answer:

Chemical change

Explanation:

The rusting of iron/a nail is a chemical change

Iron (Fe) and Oxygen (O) combine to create the compound Iron Oxide (Fe2O3), which is rust.

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Consider the electrolysis of molten barium chloride (bacl2). (a) write the half-reactions. include the states of each species..
IrinaK [193]

<span>Molten barium chloride is separetes:</span><span>
BaCl</span>₂(l) → Ba(l) + Cl₂(g), <span>
but first ionic bonds in this salt are separeted because of heat: 
BaCl</span>₂(l) → Ba²⁺(l) + 2Cl⁻(l).

Reaction of reduction at cathode(-): Ba²⁺(l) + 2e⁻ → Ba(l).

Reaction of oxidation at anode(+): 2Cl⁻(l) → Cl₂(g) + 2e⁻.

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3 0
3 years ago
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Answer:

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Explanation:

In order to compare the degree of decomposition of these reactions, we have to compare the equilibrium constant Kp. Kp is equal to the partial pressure of the products raised to their stoichiometric coefficients divided by the partial pressure of the reactants raised to their stoichiometric coefficients. The higher the Kp, the more products and fewer reactants at equilibrium. Among these reactions, D is the one that has the highest Kp, therefore the one experiencing the largest degree of decomposition.

4 0
4 years ago
How many additional electrons does this atom of oxygen need in its valence shell to satisfy the octet rule?
vfiekz [6]

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Explanation:

cause it is what it is :> mark me brainlest

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3 years ago
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