<span>If a solution conducts electricity, it it positive evidence that solute dissolved in solvent is electrolyte.</span>
The goal is to be able to quickly glance from the road in front of you to the road behind you without having to move or turn your body. Locate the levers or buttons that adjust the side mirrors. ... Older models often require you to manually adjust them using a lever or by pressing on the mirror itself.
Answer:
-142.3 per mole, b) 2 O₃ (g)
Explanation:
2O₃ (g) → 3O₂ (g) ΔH = -284.6 KJ
According to the equation 2 mole of ozone yields 3 mole of oxygen gas and the enthalpy change = -284.6 KJ
a) enthalpy change per mole = -284.6 / 2 mole = -142.3 KJ per mole
b) The reaction is exothermic since the enthalpy change is negative meaning that the heat of reactant is greater than heat of product. If the heat of product is greater than heat of reactant meaning enthalpy change is positive; the reaction is endothermic. 2 O₃ (g) has higher enthalpy compared to 3 O₂ (g) since the enthalpy change is negative
All given elements belong to second period of periodic table. And we know that going from left to right along the period the number of shells (Principle Quantum Number) remains constant and the number of protons (atomic number) increases, due to this increase in nuclear charge the valence electrons are more attracted towards the nucleus resulting in decreasing the atomic radii, Hence, the atomic radii from larger to smaller radii are as ,
Li Be B C N Ne
Largest --------------------------------> Smallest