The answer is 1.03 quarts
1 mole = 6.22 x 10^23 molecules (Avogadro's number)
15 moles x (6.22 x 10^23) = 9.33 x 10^24 atoms
B. position.
Potential energy is associated with position.
Electrons that have the highest energy are valence electrons. This is because the electron(s) on the outer shell are further away from the attractive force of the nucleus (remember, the nucleus is positively charged as protons are positive and neutrons are neutral, and electrons are negatively charged). This means that electrons on the outer shell are easier to remove, and are more reactive.
There are a number of
ways to express concentration of a solution. This includes molarity. Molarity
is expressed as the number of moles of solute per volume of the solution. The
mass of NaCl needed for the solution is calculated as follows:
0.020 M = 0.020 moles NaCl / L
amount in moles of solute = 0.020 moles NaCl / L x .350 L = 0.007 mol NaCl
amount in grams =<span>0.007 mol NaCl x 58.44 g/mol = 0.41 g NaCl</span>