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MrMuchimi
3 years ago
11

How many valance Elton’s does aluminum have

Chemistry
2 answers:
Arada [10]3 years ago
7 0

Answer:13

Explanation:On the periodic table of elements 13 is the atomic number,which is the amount of protons and electrons

inn [45]3 years ago
5 0

Actually, the valence electron number for aluminum is 3

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in the following reaction, how many grams of benzene (C6H6) will produce 42 grams of CO2? 2C6H6 + 15O2 → 12CO2 + 6H2O
Mrrafil [7]

Answer: -

12.41 g

Explanation: -

Mass of CO₂ = 42 g

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Number of moles of CO₂ = \frac{42}{44 g/mol}

= 0.9545 mol

The balanced chemical equation for this process is

2C₆H₆ + 15O₂ → 12CO₂ + 6H₂O

From the balanced chemical equation we see

12 mol of CO₂ is produced from 2 mol of C₆H₆

0.9545 mol of CO₂ is produced from \frac{2 mol C6H6 x 0.9545 mol  CO2}{12 mol CO2}

= 0.159 mol of C₆H₆

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Mass of C₆H₆ =Molar mass x Number of moles

= 78 g / mol x 0.159 mol

= 12.41 g

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What does an atom become if it gains or loses electrons?
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