Answer:
C.
Fe goes from 0 to 2+, oxidation. It is reducing agent
N goes from 5+ to 2+, reduction. It is oxidizing agent
Explanation:
Oxidation number
Fe (s) has 0
FeSO4 has 2+
HNO3 N has 5+
NO N has 2+
Similar fossils, it suggests that these continents broke apart at the same time to have the same creatures living on them
Answer:
The correct answer is -2878 kJ/mol.
Explanation:
The reaction that takes place at the time of the oxidation of glucose is,
C₆H₁₂O₆ (s) + 6O₂ (g) ⇒ 6CO₂ (g) + 6H₂O (l)
The standard free energy change for the oxidation of glucose can be determined by using the formula,
ΔG°rxn = ∑nΔG°f (products) - ∑nΔG°f (reactants)
The ΔG°f for glucose is -910.56 kJ/mol, for oxygen is 0 kJ/mol, for H2O -237.14 kJ/mol and for CO2 is -394.39 kJ/mol.
Therefore, ΔG°rxn = 6 (-237.14) + 6 (-394.39) - (-910.56)
ΔG°rxn = -2878 kJ/mol
Answer is: <span>to convert solar energy into the chemical energy of sugars.
</span><span>Solar energy is stored in chemical bonds of sugars (glucose for example).
</span><span>In carbon dioxide, carbon has oxidation number +4 and in photosynthesis carbon gain electrons (solar energy), so
his oxidation number is lowered (reduced). Light energy is transformed
into chemical energy, that is stored in carbohydrate molecules
(glucose), which are synthesized from carbon
dioxide and water.</span>
<u>Answer:</u>
Carbon and silicon both are tetravalent elements as compared to germanium, tin, and lead which are divalent.
That's because Ge, tin, and Pb show inert pair effect and has a greater nuclear effective charge on the 's' electrons due to poor shielding effect. .That's why these elements are not able to share their valence electrons while carbon and silicon does and show "catenation" which is the ability to form long chain molecules.