A) Magnets can attract through solid materials.
Missing question:
Nitrogen: <span>2.0 L; </span>1.0 atm; 25°<span>C.
Oxygen: 3</span>.0 L; 2.0 atm; 25°C.
<span>When the valve between the two containers is opened, nitrogen gas moves from one container to another container and gases are mixed together, total volume of nitrogen is than:
V(nitrogen) = 2,0 L + 3,0 L = 5,0 L.</span>
Answer:
Zn(OH)₂
<em>Explanation:
</em>
Zn is above Fe in the activity series, so it is more readily oxidized:
Zn(s) ⟶ Zn²⁺(aq) + 2e⁻
The zinc ions go into solution.
The electrons travel from the Zn to the surface of the iron nail, where they reduce the water to hydrogen and hydroxide ions.
2H₂O(ℓ) + 2e⁻ ⟶ H₂(g) + 2OH⁻(aq)
Neither the zinc ions nor the hydroxide ions can move far through the gel.
Their concentration builds up around the hail. The ions find each other and form a precipitate.
Zn²⁺(aq) + 2OH⁻(aq) ⟶ Zn(OH)₂(s)