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Elanso [62]
3 years ago
13

Earlier in the lesson, you determined that the enthalphy for magnesium combustion could be computed using Hess’s law. The formul

a derived from the reaction equations was:
Delta H shown in orange equals delta H 1 in green minus delta H 2 in purple plus delta h 3 in blue.

The enthalpy of the magnesium combustion is
kJ/mol.
Chemistry
2 answers:
Musya8 [376]3 years ago
4 0

Answer:

look at pic

Explanation:

.kjkj;lkm'

kvv77 [185]3 years ago
3 0

Answer:

-655 kj/mol

Explanation:

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Hydrochloride acid +_________ zinc chloride +hydrogen​
Klio2033 [76]

Answer:

Hydrochloride acid + Zinc = Zinc Chloride + Hydrogen

Explanation:

When Hydrochloride acid and Zinc react, it results in the formation of Zinc chloride and hydrogen.

<em>Hope I helped</em>

3 0
2 years ago
A certain skin lotion is a fine mixture of water and various oils. This lotion is cloudy and cannot be separated into oil and wa
timofeeve [1]
The answer you are looking for would be a colliod. Hope this helps have a great day!!

6 0
3 years ago
Read 2 more answers
What does the energy hill represent on an energy diagram?
Butoxors [25]

Answer:

The correct answer is option D.

Explanation:

When a chemical reaction proceeds the reactants are converted into products. The energy hill represents the potential energy of the reaction.

There are two conditions: If the reaction is endothermic than the energy of the products is greater than the energy of the reactants and  ΔH  is positive. This energy gain is shown in the form of a peak.  In an exothermic reaction, the energy of the products is lower than the reactants and  ΔH  is negative.

So the suitable option is D which states that the reaction is endothermic and the potential energy gained by the products is higher when a reaction proceeds.

6 0
3 years ago
1. the purpose of the aqueous solutions in a galvanic cell is to?
ludmilkaskok [199]

Answer:

1. The correct option is;

c. maintains charge balance in the cell

2. The correct option is;

c. +3.272 V

Explanation:

The aqueous solution in a galvanic cell is the electrolyte which is a ionic solution containing that permits the transfer of ions between the separated compartment of the galvanic cell such that the overall system is electrically neutral

Therefore, the aqueous solution maintains the charge balance in the cell

2. Here we have;

B₂ + 2e⁻ → 2B⁻ Ecell = 0.662 V

A⁺ + 1e⁻ → A Ecell = -1.305 V

Hence for the overall reaction, we have;

2A + B₂ → 2AB gives;

(0.662) - 2×(-1.305)  = +3.272 V.

4 0
3 years ago
Explain why the statement “The speed of light is 300 million m/s” is not always correct.
levacccp [35]

Because the speed of light is determined by the medium that is it in. If light is in a vacuum it goes 300 million meters per second but it is slower in air, and even slower in water because water is more dense than the previous two.

5 0
3 years ago
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