Molar mass NaCl = 58.44 g/mol
number of moles
1 mole ------ 58.44 g
? moles ----- 25 g
25 x 1 / 58.44 => 0.4277 moles
Therefore:
M = n / V
M =0.4277 / 1.5
M = 0.285 mol/L
Answer:
B. There is a very large percentage of C-12.
Explanation:
Hello there!
In this case, according to the given information, it turns out possible for us to realize that, since the average atomic mass is 12.01 amu, then the C-12, with an atomic mass of 12.000 am prevails over C-13 with an atomic mass of 13.003 amu as long as the average is nearer to the former.
In such a way, the answer will be B. There is a very large percentage of C-12.
Regards!
Use the trends in the ionization energies of the elements to explain the following observations. (a) Elements on the left side of the periodic table are more likely than those on the right to form positive ions. Ionization energies measure the tendency of a neutral atom to resist the loss of electrons.
Not any answer choices so this is the best answer that i can give you.
1 liter of O and 1 liter of NE have the same number of molecules.