Answer:
The answer should be A:) The energy produced from the splitting of atoms.
Explanation:
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BeH₂ is a linear molecule, while CaH₂ is an angular molecule.
The difference between these two molecules is given by the number of electrons they have. Be is in the 2nd period of the Periodic table, and the ion Be⁺² doesn't have any free electron pairs when bonding to H. Ca is in the 4 period of the periodic table, meaning that it has more electrons, and the ion Ca⁺² has two free electron pairs when bonding to H that makes the molecule angular by pushing the bonds at an angle by sterical hindrance.
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Answer:
We should fill the acetylene tank to a pressure of 100 atm
Explanation:
Step 1: Data given
Volume tank 1 = 7.00 L
Tank 1 is filled with oxygen and has a pressure of 125 atm
Volume tank 2 = 3.50 L
Step 2: The balanced equation
2 C2H2 + 5 O2 → 4 CO2 + 2 H2O
Step 3: Calculate the pressure of acetylene
p(oxygen) * V(Oxygen) = n(Oxygen) * R * T
p(Acetylene) * V(Acetylene) = n(Acetylene) * R * T
We can assume both tanks are at the same temperature, so we can write this as followed:
p(Oxygen)* V(Oxygen) / p(Acetylene)*V(Acetylene) = n(Oxygen) / n(Acetylene)
⇒with n(Oxygen) / n(Acetylene) = 5/2
⇒with p(Oxygen) = 125atm
⇒V(Oxygen) =7L
⇒V(Acetylene) = 3.5L
⇒ this gives us: (125 * 7) / (P(Acetylene) * 3.5) = 5/2
p(Acetylene) = 100 atm
We should fill the acetylene tank to a pressure of 100 atm
Yes baking soda is dissolved in vinegar and bubbles appear is a CHEMICAL CHANGE .
