Answer:
![CuSO_4 (aq) + Fe (s)\rightarrow FeSO_4 (aq) + Cu (s)](https://tex.z-dn.net/?f=CuSO_4%20%28aq%29%20%2B%20Fe%20%28s%29%5Crightarrow%20FeSO_4%20%28aq%29%20%2B%20Cu%20%28s%29)
Explanation:
Identify all of the compounds present:
- aqueous copper(II) sulfate: we have copper charged as 2+, sulfate anion has a charge of 2-. This means the charges are balanced if we take 1 ion of each to give
; - solid iron metal: iron metal is Fe, then including the state of iron, we have
; - aqueous iron(II) sulfate: iron has a charge of 2+, sulfate has a charge of 2-, so the positive charge balances the negative charge to give a formula of
; - solid copper metal: copper metal is Cu, then including the state of copper, we have
.
We then have a reaction:
![CuSO_4 (aq) + Fe (s)\rightarrow FeSO_4 (aq) + Cu (s)](https://tex.z-dn.net/?f=CuSO_4%20%28aq%29%20%2B%20Fe%20%28s%29%5Crightarrow%20FeSO_4%20%28aq%29%20%2B%20Cu%20%28s%29)
Answer:
Option D is correct.
Explanation:
Compared to a sample of helium at STP, the same sample of helium at a higher temperature and a lower pressure because any gas at a higher temperature and a lower pressure will behaves like an ideal gas. for eg.
nitrogen at STP show its behavior as an ideal gas.
When pressure of a gas increased & temperature is decreased then the gas does not follow ideal gas law.
Therefore option D is correct.
Answer:
The waitress thought the man meant H202 which is Hydrogen Peroxide. The man drank the Hydrogen Peroxide and then died.
Number of valence electrons (they all have 7 valence electrons)