Yes it is. the black ones are electrons as well
Chemical weathering is when things get weathered chemically
<h3><u>Answer;</u></h3>
= 1.183 × 10^25 atoms
<h3><u>Explanation;</u></h3>
Volume of a cylinder is given by the formula;
πr²h , where r is the radius, and h is the height or length.
Volume = 3.14 × 2.5² × 10
= 196.25 cm³
But density = 2.7 g/cm³
Therefore;
Mass = volume × density
= 196.25 × 2.7
= 529.875 g
But; 1 atom = 4.48 x 10-23 g
Therefore;
Number of atoms = 529.875 g / 4.48 x 10-23 g
<u>= 1.183 × 10^25 atoms</u>