Answer:
Molecules in order of decreasing rate of effusion:
Explanation:
Mass of gas=
Mass of gas =
Mass of gas =
Mass of gas =
According Graham's law:
'The rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas'.The equation given by this law follows the equation:
So, higher the molecular mass of the gas lower will be the effusion rate and vice versa.
Increasing order of molecular masses of the given gases:
Decreasing order of effusion rate respective to gases:
Molecules in order of decreasing rate of effusion:
A cation is an atom or group of atoms that have a positive charge.
The answer is D
Because the bread cannot go back to its previous state, and because a new substance was formed. :)
Answer:
Explanation:
Chemical equation:
Fe + Cl₂ → FeCl₃
Balanced chemical equation:
2Fe + 3Cl₂ → 2FeCl₃
Chemical equation:
H₂O₂ → H₂O + O₂
Balanced chemical equation:
2H₂O₂ → 2H₂O + O₂
Chemical equation:
Ca + O → CaO
Balanced chemical equation:
Ca + O → CaO
Chemical equation:
Al + O₂ → Al₂O₃
Balanced chemical equation:
4Al + 3O₂ → 2Al₂O₃
Combustion is a type of exothermic chemical reaction that generates light and heat in most cases, and occurs fairly quickly.
<h3>What is an exothermic reaction?</h3>
An exothermic reaction is one that when it occurs releases energy in the form of heat or light to the environment.
<h3>Characteristics of an exothermic reaction</h3>
- When this type of reaction occurs, the products obtained have lower energy than the initial reactants.
- Most of the exothermic reactions are oxidation, and when they are very violent they can generate fire, as in combustion.
- Combustion is a very fast oxidation reaction that occurs between materials called fuels and oxygen.
Therefore, we can conclude that combustion is an example of an exothermic reaction that releases large amounts of heat, which can lead to fire.
Learn more about an exothermic reaction here: brainly.com/question/14969584