It is because they have different number of valence electrons. Many properties of the element depend on that and as it's different within a period, they don't share many properties
Hope this helps!
Answer:
I think the answer would be 'testable'.
Answer: Endothermic, 2.80 kJ
Explanation
Since this reaction absorbs heat, it is endothermic.
The energy absorbed per mole CO is 2.80 kJ and this reaction is already balanced. q= 2.80 kJ
Hope this helps:)
B all objects move around the sun
Answer:
Explanation:
From the information given:
(a)
(b)
(c)
∴
(d)
∴
(e)
∴
∴