Answer: doubled
Doubling the mass doubles the KE.
Can u show picture because without picture I don’t understand the problem u trying to explain
Answer:
3.125 grams.
Explanation:
- It is known that the decay of a radioactive isotope isotope obeys first order kinetics.
- Half-life time is the time needed for the reactants to be in its half concentration.
- If reactant has initial concentration [A₀], after half-life time its concentration will be ([A₀]/2).
- Also, it is clear that in first order decay the half-life time is independent of the initial concentration.
∵ Thulium-167 has a half life of 9.0 days.
∴ The time is needed to calculate the grams are left after (36.0 days) represents (36.0 days / 9.0 days) = 4.0 half-lives.
50.0 grams → (first half life) 25.0 grams → (second half life) 12.5 grams → (third half life) 6.25 grams → (fourth half life) 3.125 grams.
So, the grams are left after 36.0 days = 3.125 grams.
Answer:
The answer to the question is
The percentage yield when 500. g of SO₃ react with excess water to produce 575 g of H₂SO₄ is 81.63 %
Explanation:
The known variables are
Mass of SO₃ = 500 g
Mass of H₂SO₄ = 575 g
Molar mass of SO₃ = 80.0632 g/mol
Molar mass of H₂SO₄ = 98.079 g/mol
The reaction equation is
SO₃ +H₂O → H₂SO₄
One mole of SO₃ react with one mole of H₂O to produce one mole of H₂SO₄
Therefore number of moles of SO₃ in 500 g sample of SO₃ = (500 g)/(80.0632 g/mol) = 6.25 moles
Also number of moles of H₂SO₄ in 575 g sample of H₂SO₄ = (575 g)/(98.079 g/mol) = 5.86 moles
Which shows that the reaction is in the forward direction, production of H₂SO₄
Therefore 6.25 moles of SO₃ can produce 6.25 moles of H₂SO₄ and
The mass of 6.25 moles of H₂SO₄ = 6.25 moles × 98.079 g/mol = 612.51 g
Theoretical Yield = 612.51 g
Percentage Yield = 
= 
Percentage Yield = 81.63 %
Answer:
The last answer would be correct because if you have ever done it before you would know that rubbing your feet (just like the rubbing of ice crystals) on the carpet will create the energy you need, then once you touch the metal it creates that spark!
Explanation:
hoped that helped-I would be thankful for brainliest ;)
