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jeka57 [31]
3 years ago
15

What type of reaction is depicted by this equation?

Chemistry
1 answer:
const2013 [10]3 years ago
5 0
It is a decomposition reactions
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*BRAINLIEST BRAINLIEST
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Answer:

THE 3 third one

Explanation:

8 0
2 years ago
An atom of argon in the ground state tends not to bond with an atom of a different element because the argon atom has (a)a total
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The answer is <span>a total of eight valence electrons
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During an investigation, a student burns magnesium to form magnesium oxide. The starting mass of magnesium is measured as 21.3 g
enot [183]

Answer:

Percentage yield = 85.2%

Explanation:

Given data:

Mass of Mg = 21.3 g

Actual yield of MgO = 30.2 g

Percentage yield = ?

Solution:

Chemical equation:

2Mg + O₂ → 2MgO

Number of moles of Mg = mass/molar mass

Number of moles of Mg = 21.3 g / 24.3 g/mol

Number of moles of Mg = 0.88 mol

Now we will compare the moles of MgO with Mg.

                 Mg           :               MgO

                 2               :               2

                0.88             :             0.88

Mass of MgO:           

Mass of MgO= moles × molar mass

Mass of MgO= 0.88 mol × 40.3g/mol

Mass of MgO =  35.46 g

Actual yield of MgO = 30.2 g

Percentage yield:

Percentage yield = Actual yield/theoretical yield × 100

Percentage yield = 30.2 g/ 35.46 g × 100

Percentage yield = 85.2%

3 0
3 years ago
What are the advantages and disadvantages of living in a group?
Feliz [49]
Advantages
people are there to help
never lonely
they could do things for you

disadvantages
loud
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they don't do work
3 0
3 years ago
Type the correct answer in each box. Spell all words correctly.
Dmitry_Shevchenko [17]
There’s nothing there?
8 0
3 years ago
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