O2 isn't necessary for rusting, but some source of oxygen is required. Rust is just another name for iron oxide, and without oxygen there can't be oxide.
Hope this helps,
Davinia.
There are 0.0172 moles of chlorine gas initially in the vessel.
Suppose we take a look and consider the reaction between P4 and Cl2, the balanced chemical equation between them can be expressed as:
![\mathbf{P_4 + 6 Cl _2 \to 4 PCl_3}](https://tex.z-dn.net/?f=%5Cmathbf%7BP_4%20%2B%206%20Cl%20_2%20%20%5Cto%204%20PCl_3%7D)
Given that:
- mass of P₄ = 250 mg = 0.25g
- pressure of Cl₂ = 4.21 atm
- volume of the reactor = 100 mL = 0.1 L
- temperature = 298 K
Using the Ideal gas equation, the number of moles of chlorine gas that were initially present in the vessel is:
PV = nRT
Making (n) the subject of the formula:
![\mathbf{n = \dfrac{PV}{RT}}](https://tex.z-dn.net/?f=%5Cmathbf%7Bn%20%3D%20%5Cdfrac%7BPV%7D%7BRT%7D%7D)
![\mathbf{n = \dfrac{4.21 \ atm \times 0.1 \ L}{0.0821 \ atm.L/mol*K \times 298 \ K}}](https://tex.z-dn.net/?f=%5Cmathbf%7Bn%20%3D%20%5Cdfrac%7B4.21%20%5C%20atm%20%5Ctimes%200.1%20%5C%20L%7D%7B0.0821%20%20%5C%20atm.L%2Fmol%2AK%20%5Ctimes%20298%20%5C%20K%7D%7D)
n = 0.0172 moles
Therefore, we can conclude that there are 0.0172 moles of chlorine gas initially in the vessel.
Learn more about the Ideal gas equation here:
brainly.com/question/18518493?referrer=searchResults
Answer:
DNA bases bonds with each other in this sequence
Explanation:
Guanine bonds triple bonds with cytosine respectively while Adenine bonds double bond with thymine .