Carbon dioxide : the air component in soil provides the carbon dioxide needed for photosynthesis
Answer:
compare what he has found with other things that are known about the physical world
Explanation:
Good luck <3
The oxidation state of Lithium changed from 0 to +1
The oxidation state of hydrogen changed from +1 to 0.
<h3>What is the oxidation state of the elements in the reaction?</h3>
The equation of the redox reaction is given as follows:
2 Li + 2 H₂O → 2 LiOH + H₂
The oxidation states of the elements changed as follows:
The oxidation state of Lithium changed from 0 to +1
The oxidation state of hydrogen changed from +1 to 0.
In conclusion, the reaction is a redox reaction.
Learn more about oxidation state at: brainly.com/question/27239694
#SPJ1
Answer:
B. CH₅N
Explanation:
The combustion reaction of a compound CₐHₓNₙ with O₂ is:
CₐHₓNₙ + O₂ → a CO₂ + X/2 H₂O + n NO₂
Where 1 mole of CₐHₓNₙ with an excess of O₂ produce a moles of CO₂, X/2 moles of H₂O and n moles of NO₂
Thus, you need to convert the mass of CO₂ and H₂O to moles to find the C:H ratio and determine a possible empirical formula thus:
Moles CO₂ (Molar mass 44g/mol):
44g ₓ (1mol / 44g) = 1 mole CO₂ = 1 mole C
Mole of H₂O (Molar mass 18g/mol):
45g ₓ (1 mol / 18g) = 2.5 moles H₂O = 5 moles H
Thus, in the compound you have 5 moles of H per mole of C, and a possible empirical formula is:
B. CH₅N
The only structure that meet this C:H ratio
Answer:
(D) P(D or E) = 0.72
Explanation:
That's the correct answer.
