Answer:
Explanation:
FIND THE SOLUTION IN THE ATTACHMENT
Answer:
An increase on temperature.
Explanation:
Any element in the period of alkile earth metal cuz O has a valence electron of 6 and the alkile earth metals have V.E. of 2 which completes the octet rule...making it covalently bond to form a 2 atom molecule ex: Lewis structure Be:O
Answer:
Option D. T
Explanation:
Enthalpy change (ΔH) is simply the difference between the heat content of the product (Hp) and the heat content of the reactant (Hr). Mathematically, it is expressed as:
Enthalpy change (ΔH) = Heat of product (Hp) – heat of reactant (Hr)
ΔH = Hp – Hr
From the diagram given above, the difference between the heat content of product and the heat content of reactant is T.
Therefore, the enthalpy change of the reaction is T.
Physical changes<span> only </span>change<span> the appearance of a substance, not its chemical composition. Chemical </span>changes cause<span> a substance to</span>change<span> into an entirely substance with a new chemical formula. Chemical </span>changes<span> are also known as chemical reactions.</span>