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Ulleksa [173]
4 years ago
9

The process where a substance reacts with oxygen

Chemistry
1 answer:
daser333 [38]4 years ago
3 0

Answer:

The process where substance react with oxygen is called combustion.

Explanation:

When substance react with oxygen combustion is occur. The substance which burned is called fuel and in this process large amount of heat is released to the surrounding. It is exothermic process.

For example:

4Li + O₂    →      2Li₂O

2Mg + O₂    →    2MgO

  S +  O₂      →      SO₂  

The product which is formed as a result of combustion reaction are called oxides.

In given examples we can see that lithium, magnesium and sulfur react with oxygen and product formed is oxides of respective elements such as lithium oxide ( Li₂O), magnesium oxide (MgO) and sulfur oxide ( SO₂ ).

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I need some help with chem, how do you know whether the reaction is endothermic or exothermic? Pls provide examples.
salantis [7]

Answer:

Basing on explanations below;

1. Endothermic reactions have a positive enthalpy while Exothermic reactions have a negative enthalpy.

2. Endothermic reactions take place in high temperatures while Exothermic reactions take place in low temperatures.

5 0
3 years ago
An equal number of moles of glucose, C6H12O6, and KI are dissolved in equal volumes of water. Which solution has the higher: (12
Alinara [238K]

Answer:

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Explanation:

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3 0
3 years ago
What happen when Nacl solution reacts with AgNo3 solution​
Anna71 [15]

Answer:

hii

Explanation:

NaCl + AgNO3 = AgCl + NaNO3

7 0
4 years ago
In a laboratory experiment, john uses a message to seperate soil particles from water . Which technique separation which techniq
eimsori [14]
So visualize soil mixed with water. To separate it, you can use a sieve to filter the water.
3 0
3 years ago
What is e° cell for the reaction of nickel(ii) ions with cadmium metal at 25°c? ( r = 8. 314 j/k • mol, f = 96,500 c • mol –1) n
Alexus [3.1K]

At anode,

Cd----->  + 2

At cathode,

 + 2e -----> Ni

Overall reaction,

+ Cd(s) ------> + Ni                          K=1.17

(aq)                          (aq)      (s)

By nernst equation,

E=  -  Log K

Where,

          F=96500c/mol

         M=2

          T=298K

         E=Zero at equilibrium

R=8.314 J

0=  - Log(1.17)

= 0.150v

what is nernst equation?

The Nernst equation is a chemical thermodynamical relationship used in electrochemistry that enables the determination of a reaction's reduction potential (half-cell or full-cell reaction) from the standard electrode potential, absolute temperature, the number of electrons involved in the oxydo-reduction reaction, and activities (often approximated by concentrations) of the chemical species undergoing reduction and oxidation, respectively. It was given the equation's original name in honor of the German physical scientist Walther Nernst.

The link between cell potential, standard potential, and the behaviors of electrically active (electroactive) species is described by the Nernst equation. It links the standard cell potential to the effective concentrations (activities) of the reaction's constituent parts.

Learn more about nernst equation visit here:-

brainly.com/question/75084?referrer=searchResults

#SPJ4

5 0
2 years ago
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