hey there:
Molar mass of Au = 196.96 g/mol
Therefore:
moles of Au atoms = mass Au / molas mass
moles of Au atoms = 2.56 / 196.96
moles of Au atoms = 0.0123 moles
Hope that helps!
1)water has a great capacity to hold a moderate heat energy
Answer:
simple microscope has only one lens
:)
The average atomic mass of Jz is 331.3 u.
The average atomic mass of Jz is the <em>weighted average</em> of the atomic masses of its isotopes.
We multiply the atomic mass of each isotope by a number representing its <em>relative importance</em> (i.e., its fractional abundance).
Thus,
⅗ × 329.1 u = 197.46 u
⅖ × 334.5 u = <u>133.80 u</u>
TOTAL = 331.3 u