Balanced chemical reaction: 4Al + 3O₂→ 2Al₂O₃.
a) Oxidation half-reaction: Al⁰ → Al⁺³ + 3e⁻ /×4; 4Al⁰ → 4Al⁺³ + 12e⁻.
b) Reduction half-reaction: 4e⁻ + O₂ → 2O⁻² /×3; 12e⁻ + 3O₂ → 6O⁻².
Oxidation is increase of oxidation number, aluminium change oxidation number from zero to +3 and reduction is decrease of oxidation number, oxygen from 0 to -2.
Answer:
Mass of carbon tetrachloride 135.15 g.
Explanation:
Given data:
Volume of carbon tetrachloride = 85.0 mL or 85.0 cm³
Density of carbon tetrachloride = 1.59 g/cm³
Mass of carbon tetrachloride = ?
Solution:
Formula:
D=m/v
D= density
m=mass
V=volume
Now we will put the values in formula:
1.59 g/cm³ = m / 85.0 cm³
m = 1.59 g/cm³ ×85.0 cm³
m = 135.15 g
In atomic emission spectroscopy, the atoms absorb energy, become excited, and release energy in the form of light.
Answer:
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