Answer:
0.500 moles of oxygen
Explanation:
<em>Full question says: "Calculate the moles of oxygen needed to produce 0.500 moles of acetic acid.</em>
<em />
The reaction of ethanol (C₂H₅OH) with oxygen (O₂) is:
C₂H₅OH + O₂ → CH₃COOH + H₂O
<em>Where 1 mole of ethanol reacts per mole of oxygen to produce 1 mole of acetic acid (CH₃COOH) and 1 mole of water</em>
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Based on the chemical equation (1 mole of oxygen produce 1 mole of acetic acid; Ratio 1:1). Thus, if you want to produce 0.500 moles of acetic acid you will need:
<h3>0.500 moles of oxygen</h3>
An isotope with a high value of n/z will tend to decay through β decay.
Species of atoms of a chemical element with the same atomic wide variety and nearly equal chemical behavior but with differing atomic mass or mass quantity and one-of-a-kind physical properties. The atoms belonging to the equal element, having same atomic range Z, but distinctive mass variety A, are referred to as isotopes.
Isotopes are atoms with one-of-a-kind atomic hundreds that have the same atomic variety. The atoms of different isotopes are atoms of the equal chemical element; they fluctuate inside the number of neutrons inside the nucleus.
Subtract the number of protons from the atomic mass. this is the quantity of neutrons that the regular version of the atom has. If the quantity of neutrons within the given atom is different, than it's miles an isotope.
Learn more about isotope here:-brainly.com/question/14220416
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Answer:
Light of wavelength 200 nm will have lowest frequency in while traveling through diamond.
Explanation:
Speed of the light in vacuum = c
Relation between speed of light , wavelength (λ) and frequency (ν);
Speed of light in a medium = c' = c/n
...[1]
Where : n = refractive index of a medium
So, the medium with greater value of refractive index lower the speed of light to greater extent.
From [1] , we can see that frequency of light is inversely proportional to the refractive index of the medium :
This means that higher the value of refractive index lower will be the value of frequency of light in that medium or vice-versa.
According to question, light of wavelength 200 nm will have lowest frequency in while traveling through diamond because refractive index of diamond out of the given mediums is greatest.
Increasing order of refractive indices:
Decreasing order of frequency of light 210 nm in these medium :
Answer:
Mass of iron oxide: 79.85 g
Explanation:
Given data:
Mass of iron = 112 g
Mass of O₂ = 24 g
Mass of iron oxide formed = ?
Solution:
4Fe + 3O₂ → 2Fe₂O₃
Number of moles of Fe:
Number of moles = mass/ molar mass
Number of moles = 112 g/ 55.85 g/mol
Number of moles = 2 mol
Number of moles of O₂:
Number of moles = mass/ molar mass
Number of moles = 24 g/ 32 g/mol
Number of moles = 0.75 mol
Now we will compare the moles of oxygen and iron with iron oxide.
Fe : Fe₂O₃
4 : 2
2 : 2/4×2 = 1
O₂ : Fe₂O₃
3 : 2
0.75 : 2/3×0.75 = 0.5
The number of moles of iron oxide formed by oxygen are less thus it will be limiting reactant.
Mass of iron oxide:
Mass = number of moles × molar mass
Mass = 0.5 mol × 159.69 g/mol
Mass = 79.85 g