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Elenna [48]
2 years ago
7

What is the definition of a Double Displacement Reaction?

Chemistry
2 answers:
fiasKO [112]2 years ago
4 0

Answer:

A double displacement is a type of chemical reaction that in which the reactant ions exchange places to form new products

Explanation:

I took the quiz

Slav-nsk [51]2 years ago
4 0

Answer:

When two different atoms or groups of atoms are exchanged, then it is a double displacement reaction.

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3 years ago
1. Balance the equation, then answer the following based on the equation
Artemon [7]

Answer:

Q1. a) 4Al + 3O₂ ➟ 2Al₂O₃

b) 7.4 moles

c) 11.1 moles

Explanation:

To balance an equation, ensure that the total number of atoms of each element on both sides are equal.

Al + O₂ ➟ Al₂O₃

On the left side of the arrow, you would find the reactants while the product(s) is found on the left hand side.

<u>Reactants</u>

Al atoms: 1

O atoms: 2

<u>Product</u>

Al atoms: 2

O atoms: 3

After balancing,

4Al + 3O₂ ➟ 2Al₂O₃

We have 4 Al atoms and 6 O atoms on both sides.

b) The balanced equation tells us the mole ratio of Al to Al₂O₃.

Al: Al₂O₃

= 4: 2 (÷2 throughout)

= 2: 1

This means that for every 1 mole of Al₂O₃, 2 moles of Al is needed.

Since we need 3.7 moles of Al₂O₃,

number of moles of Al needed

= 2×3.7

= 7.4

c) 4Al + 3O₂ ➟ 2Al₂O₃

For every 4 moles of Al, 3 moles of O are needed.

For each mole of Al,

number of moles of O needed

= 3÷4

= 0.75

For 14.8 moles of Al,

number of moles of O required

= 0.75 ×14.8

= 11.1

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Answer:

Explanation:

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