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Answer : 0.25 M
explanation :
- Molarity is the number of moles of solute per liters of solvent.
- Molarity (M) = (n) / V (liter) = 2 / 8 = 0.25 M
Answer:
Mole = 2.67
Given data:
Number of atoms of carbon = 1.61 × 10²⁴
Avogadro's Number = 6.023 × 10²³
Required:
Moles = ?
Solution:
Formula for calculating moles from particle numbers is given as,
Mole = Number of particle / Avogadro's number
putting values
Moles = 1.61 × 10²⁴ / 6.023 × 10²³
Moles = 2.67
The correct answer is gonna be C) A lithium cation ion is smaller
A lithium cation has lost its valence electrons, which causes the remaining electrons to be pulled in stronger by the positive charge in the nucleus. As they get closer to the nucleus, the overall size of the atom is decreased.