Answer: the answer is B!
Explanation:
S and p’s are valence electrons and if added, there is 7 in total !
Answer:
b is ur answer the temputer does increase
Explanation:
A: 12 N
B: 150 N
C: 100 N
D: 150 N
E: 220 N
If you think of it endothermic is when there is energy needed for the reaction to occur and exothermic is when the reaction releases energy
Answer:
–500KJ
Explanation:
Data obtained from the question include the following:
Heat of reactant (Hr) = 800KJ
Heat of product (Hp) = 300KJ
Enthalphy change (ΔH) =..?
The enthalphy change is simply defined as the difference between the heat of product and the heat of reactant i.e
Enthalphy change = Heat of product – Heat of reactant
ΔH = Hp – Hr
With the above formula, we can easily calculate the enthalphy change as follow
ΔH = Hp – Hr
ΔH = 300 – 800
ΔH = –500KJ.
Therefore, the overall energy change for the reaction between hydrogen and oxygen shown in the diagram above is –500KJ
