Over time, an iron nail reacts with water to produce iron oxide, or rust. Which of the following is a signal that rusting has ta
2 answers:
Explanation:
When iron reacts with the moisture present in air then an oxide layer tends to develop on the surface of iron. This process is known as rusting of iron.
Chemical formula of rust is . This layer of oxide on the surface of iron is orange-brown in color.
This change is a chemical change as a new compound iron oxide has formed in this process of rusting.
Hence, this orange-brown color on the surface of iron helps us to know that rusting has taken place.
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Answer:
The solubility of methylacetylene is 0,11 g L⁻¹
Explanation:
Henry's law is a gas law that states that the amount of dissolved gas in a liquid is proportional to its partial pressure above the liquid.
The formula is:
C = kH P
Where C is solubility of the gas (In mol/L)
kH is Henry constant (9,23x10⁻² mol L⁻¹ atm⁻¹)
An P is partial pressure (0,301 atm)
Solving, C = 2,78x10⁻³ mol L⁻¹. In grams per liter:
2,78x10⁻³ mol L⁻¹ₓ = <em>0,11 g L⁻¹</em>
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I hope it helps!