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lianna [129]
3 years ago
11

¿Cuál es el estado de oxidación del azufre en S203?

Chemistry
1 answer:
12345 [234]3 years ago
5 0

Answer:

+2

Explanation:

Stefan V. El oxígeno tendría un estado de oxidación de -2, por lo tanto el azufre tendría un estado de oxidación de +2

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because

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The matter in this series of images is going through a change. Draw a conclusion about the type of change shown. Is it a physica
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Answer:

This is a chemical change because it has been lit on fire. When it is lit on fire, the fire has been made, heat has been made, and gasses produced from the fire have also been made. Because this introduces new matter to the pictures, it is a chemical reaction.

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2 years ago
An exothermic reaction is conducted in an insulated calorimeter filled with water. The calorimeter is then sealed so that there
Vaselesa [24]
Answer: option <span>C. the total energy inside the calorimeter will decrease.
</span>

Justification:

The answer is a direct application of the first law of thermodynamic (the law of conservation of energy).

By telling that the t<span>he calorimeter is sealed so that there is no heat exchanged between the contents of the container and the surrounding air, the first law of thermodynamics implies that the total energy inside the calorimeter will not change.
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<span>That statement, without adding any more is enough justification.
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Regarding, the other statements, you can show they are true:

<span>A. the thermometer will show an increase in temperature.
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</span><span>Since the reaction is exothermic, the heat released will increase the temperature inside the sealed calorimeter,which, of course, is shown by the termometer.
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</span><span>B. The potential energy of the products will be lower than that of the reactants.
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</span><span>In any exothermic reaction, the potential energy of the products is lower than that of the reactants, because the heat released is lost by the reactants when they react and transform into the products.
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</span><span>D. The water increases in temperature as the reaction gives off heat</span>.

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6 0
3 years ago
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klasskru [66]

Answer:

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Explanation:

We want to balance the given equation;

H₂ + CuO → Cu(OH)₂ + H₂O

To balance this we have to make sure the number of each element on the left is equal to the number of each element on the right.

Thus, the correct balanced equation is;

H₂ + CuO → Cu + H₂O

5 0
2 years ago
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