Aluminum is a substance because it is a particular type of matter that has particular and unique properties. aluminum is a unique element with a place on the periodic table
Number of moles = 8.3 x 10⁻¹³
<h3>Further explanation
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The mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
5 x 10¹¹ atoms of Silver :

Answer:
atomic mass. You will have created an isotope.
Explanation:
No He believed tiny particles were invisible and couldn't be changed....So No The person that believed in this was Dalton .
Answer:
The first ionization energy for K is less than Ca because Ca has a larger effective nuclear charge.