The answer to this is Codon.
Answer:
B) 2.87 L
Explanation:
A mole of any gas at STP has a volume of about 22.412 liters. So, 0.128 moles of gas will have a volume of ...
0.128 · 22.412 L ≈ 2.87 L
Answer:
10 moles of S₈
320 moles O₂
Explanation:
The balanced equation is:
Now we can convert moles of SO₈ (the product) into moles of each reactant, using the <em>stoichiometric coefficients of the balanced reaction</em>:
- 80 mol SO₈ *
= 10 mol S₈
- 80 mol SO₈ *
= 320 mol O₂
In order for 80 moles of SO₈ to be produced, 10 moles of S₈ need to react with 320 moles of O₂.
Answer:
3.5 yrs
Explanation:
If a sample has decayed to 25%, this means 2 half-lives have passed. We are given this is equal to 7 yrs, and it follows that one half life is 3.5 yrs.