Answer:
The correct response is;
2. takes less than 15 seconds
Explanation:
Graham's law of effusion conveys that
Thus, knowing that the molar mass of neon gas = 20.18 g/mol
And, the molar mass of nitrogen gas = 28.014 g/mol
We deduce
= 0.72
So, the effusion rate of nitrogen gas will be 0.72*15 = 12.73 seconds, which is indeed less than 15 seconds.
Response:
The accurate choice is;
Sulfur oxides linked to acid precipitation
Details:
Sulfur oxide in the atmosphere interacts with oxygen, water, and other chemicals leading to the creation of acidic precipitation known as acid rain.
Sulfur oxides react with moisture in clouds to generate sulfuric acid as follows;
The sulfur gas undergoes initial oxidation
SO₂ + OH → HOSO₂
The subsequent step involves producing sulfur trioxide
HOSO₂ + O₂ → HO₂ + SO₃
Finally, sulfur trioxide reacts with water to yield sulfuric acid
SO₃ + H₂O → H₂SO₄ (aq).
Answer:
The specific heat value for silver is 0.236 J/g-C.
Explanation:
Silver has a mass of 25 grams.
The temperature shifts from 31.5° C to 58.7° C.
The required heat is equivalent to 25 g.
To determine silver's specific heat, the following equation applies:
Where c represents the specific heat of silver.
Thus, the specific heat of silver is 0.236 J/g-C.
Elemental zinc replaces copper
Explanation:
During this reaction, the zinc added to the copper sulfate solution has replaced the copper present in the compound.
This process is known as a single displacement reaction.
Zn + CuSO₄ → ZnSO₄ + Cu
This represents the reaction in the recycling process.
The reaction is influenced by the elements' positions within the reactivity series of metals.
- In a single displacement reaction, an element higher in the reactivity series displaces one that is lower.
- Zinc ranks above copper in this series, allowing it to react with sulfate.
- Consequently, copper is pushed out as a solid product in the solution.
- Elements positioned higher in this series exhibit greater reactivity
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Chemical reaction
