Explanation:
try to arrange using the given molecular formula
Answer:
Explanation:
The reaction undergoing least change in volume will have lowest change in entropy .
1 ) C₂H₂(g) + 5/2O₂(g) → 2CO₂(g) + H₂O(g)
change in volume = 2.5 +1 - ( 2 + 1 ) = 0.5
2 ) CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g)
change in volume = 2 +1 - ( 2 + 1 ) = zero
3 ) C₂H₆(g) + 7/2O₂(g) → 2CO₂(g) + 3H₂O(g)
change in volume = 3 +2 - ( 3.5 + 1 ) = 0.5
4 ) C₂H₄(g) + 3O₂(g) → 2CO₂(g) + 2H₂O(g)
change in volume = 2 +2 - ( 3 + 1 ) = zero
Hence least change in volume is in case no - 2 and 4 .
In reaction
C₂H₄(g) + 3O₂(g) → 2CO₂(g) + 2H₂O(g) and
CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g)
∆S° or change in entropy is least .
Answer:
The coins are gold
Explanation:
To solve this question we need to find the density of the sample knowing that density is the ratio between the mass of a sample (385.000g) and the volume that is occupying (20.0mL).
Density is:
385.000g / 20.0mL = 19.3g/mL
As the density of the sample is equal to the density of gold:
<h3><em>The coins are gold</em></h3>
is the symbol of the species with 23 protons and 21 electrons.
Hence, option F is correct.
<h3>What is a proton?</h3>
Electrons are a type of subatomic particle with a negative charge. Protons are a type of subatomic particle with a positive charge.
If it has 23 protons, then its proton number (also know as its atomic number) is 23. You can look that symbol up in your periodic table.
If it has 21 electrons then it has a net charge of 23(+) - 21. So we know the ionisation state of the species, and we can record that as a superscript after the symbol for the species.
Hence, is the symbol of the species with 23 protons and 21 electrons.
Learn more about the proton here:
brainly.com/question/1252435
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