Answer:
the answer is it's a balance chemical equation.
Explanation:
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Answer:
9.38 moles NaNO₃
Explanation:
Given the measurements provided, the best way to find moles is by using the molarity formula. The molarity formula is:
Molar concentration (M) = moles / volume (L)
Therefore, plug the provided values into the formula, then isolate to find moles.
Molar concentration (M) = moles / volume (L)
0.750 M = moles / 12.5 L
(0.750 M) x (12.5 L) = moles
9.38 = moles
133.92g
Explanation:
Given parameters:
Equation of the reaction 2PbS + 30₂ → 2PbO + 2SO₂
Number of moles of 0₂ = 0.6moles
Unknown:
Mass of PbO produced = ?
Solution:
The number of moles is the quantity used in chemistry to express the amount of particles contained in a substance.
2PbS + 30₂ → 2PbO + 2SO₂
From the reaction;
3 moles of O₂ will produce 2 moles of PbO
0.6 moles of O₂ will then produce = 0.4moles
Now since the we know the number of moles of PbO;
Mass of PbO = number of moles of PbO x molar mass
molar mass of PbO = 207.2 + 16 = 223.2g/mol
Mass of PbO = 0.6 x 223.2 = 133.92g
learn more:
Number of moles brainly.com/question/1841136
Ideal gas brainly.com/question/13064292
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Answer:
Co is made from incomplete combustion.
Explanation:
This essentially means if you have a fire, and not enough fuel for the fire to burn, co will always consequently be made.
Answer:
ΔE = 13.056 ev
Explanation:
Energy associated with nth state is,
En = -13.6/n²
For n = 1
E₁ = -13.6 / 1²
E₁ = -13.6/1
E₁ = -13.6 ev
Kinetic energy of electron = -E₁ = 13.6 ev
For n = 5
E₅ = -13.6 / 5²
E₅ = -13.6/25
E₅ = -0.544 ev
Kinetic energy of electron = -E₅ = 0.544 ev
Wavelength of radiation emitted:
ΔE = hc/λ = E₅ - E₁
by putting values,
ΔE = -0.544ev - (-13.6 ev )
ΔE = 13.056 ev