Answer is: C₃H₃N₃O₃.
Chemical reaction: CₓHₓNₓOₓ + O₂ → aCO₂ + x/2H₂ + x/2N₂.
m(CₐHₓNₓ) = 5,214 g.
m(CO₂) = 5,34 g.
m(H₂) = 1,09 g.
m(N₂) = 1,70 g.
n(CO₂) = n(C) = 5,34 g ÷ 44 g/mol = 0,121 mol.
n(H₂O) = 1,09 g ÷18 g/mol = 0,06 mol.
n(H) = 2 · 0,0605 mol = 0,121 mol.
n(N₂) = 1,7 g ÷ 28 g/mol = 0,0607 mol.
n(N) = 0,0607 mol · 2 = 0,121 mol.
n(C) : n(H) : n(N) = 0,121 mol : 0,121 mol : 0,121 mol /: 0,121
n(C) : n(H) : n(N) = 1 : 1 : 1.
M(CHN) = 27 g/mol.
m(O₂) = 8,13 g - 5,214 g = 2,914 g.
n(O₂) = 2,914 g ÷ 32 g/mol = 0,09 mol.
n(CₓHₓNₓOₓ) = 5,214 g ÷ 129,1 g/mol = 0,0404 mol.
n(CₓHₓNₓOₓ) : n(CO₂) = 1 : 3.
Answer:
ΔH of dissociation is 38,0 kJ/mol
Explanation:
The dissociation reaction of KBrO₃ is:
<em>KBrO₃ → K⁺ + BrO₃⁻ </em>
This dissolution consume heat that is evidenced with the decrease in water temperature.
The heat consumed is:
q = CΔTm
Where C is specific heat of water (4,186 J/mol°C)
ΔT is the temperature changing (18,0°C - 13,0°C = 5,0°C)
And m is mass of water (150,0 mL ≈ 150,0 g)
Replacing, heat consumed is:
q = 3139,5 J ≡ 3,14 kJ
13,8 g of KBrO₃ are:
13,8 g×(1mol/167g) = 0,0826 moles
Thus, ΔH of dissociation is:
3,14kJ / 0,0826mol = <em>38,0 kJ/mol</em>
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I hope it helps!
Suspensions
Explanation:
Suspensions are heterogeneous mixtures that contains large particles that can settle out or be filtered.
- Suspensions are mixtures of small insoluble particles of a solid in a liquid or gas.
- Examples are:
- powdered chalk in water
- muddy water
- harmattan
The particles in suspension can settle on standing
Learn more:
Suspension brainly.com/question/1557970
heterogeneous mixture brainly.com/question/1446244
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Answer:
chemical potential energy - It mainly has chemical potential energy, this is really a type of electrical potential energy stored in the chemical bonds of the molecules
Explanation:
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