Answer:
3.29 × 10²⁸ Atoms
Solution:
Moles and Number of atoms are related to each other as,
Moles = Number of Atoms / 6.022 × 10²³ ------- (1)
Data Given;
Moles = 5.472 ×10⁴
Number of Atoms = ?
Solving eq. 1 for Number of Atoms,
Number of Atoms = Moles × 6.022 × 10²³
Putting values,
Number of Atoms = 5.472 ×10⁴ mol × 6.022 × 10²³ atoms.mol⁻¹
Number of Atoms = 3.29 × 10²⁸ Atoms
J. Because birds swim and fish don’t
Answer: C) 0.020 m
Explanation:
Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent.
where,
n = moles of solute
= weight of solvent in g
Mole fraction of 
is = 
i.e. moles of is present in 1 mole of solution.
Moles of solute 
=
moles of solvent (water) = 1 - = 0.99
weight of solvent =
Molality =
Thus approximate molality of in this solution is 0.020 m
Answer:
Explanation:
A supersaturated solution is unstable—it contains more solute (in this case, sugar) than can stay in solution—so as the temperature decreases, the sugar comes out of the solution, forming crystals. The lower the temperature, the more molecules join the sugar crystals, and that is how rock candy is created.
