Which element is most likely to have an oxidation number of -2?
1 answer:
Answer:
D. O
_________________________________
F ----------¢ - 1
Ne --------¢ 0
Ca --------¢ + 2
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1) All matter is made of atoms. 2) Atoms are indivisible and indestructible.
There are
A. 6 significant figures
B.5 sig figs
C.2 sig figs
D.5 sig figs
Answer:
401135 kJ
Explanation:
From the balanced quation,
(q/n) = CΔE
Molar heat of combustion = 7.85kJk × (303.81-298.70)k
= 7.85kj × 5.11
= 40.1135kj
Yes, that is true. in order for it to be a redox reaction, both oxidation and reduction must be occurring.
Q = M * C *ΔT
Q / <span>ΔT = M
</span>Δf - Δi = 98.4ºC - 62.2ºC = 36.2ºC
<span>
C = 1137 J / 140 * 36.2
C = 1137 / 5068
C = 0.224 J/gºC</span>
