Answer:
A cation that has a smaller radius than the atom.
Explanation: when electrons are removed from the outermost shell of a calcium atom, the atom becomes a cation that has a smaller radius than the atom.
Answer: 437 g C6H6
Explanation: Solution attached:
1 mole of C6H6 is equal to its molar mass 78 g C6H6.
5.6 moles C6H6 x 78 g C6H6 / 1 mole C6H6
= 437 g C6H6
Vc BFF CFC. They. We’d 577755345
Answer:
Partial pressure O₂ = 1.78 atm
Explanation:
We can apply the mole fraction to solve the question:
Moles of gas / Total moles = Partial pressure of gas / Total pressure
Total moles = 1 H₂ + 2.5 He + 2O₂ = 4.5 moles
2 mol O₂ / 4.5 mol = Partial pressure O₂ / 4 atm
(2 mol O₂ / 4.5 mol ) . 4 atm = Partial pressure O₂ → 1.78 atm