The mass of a solid copper penny is 3.46 g. how many copper atoms are in the penny?

n° atoms = 3.275x10²² atoms

Explanation:

To do this, we need to use the molecular weight of the copper, which is 63.55 g/mol.

Now, to know the number of atoms of any compound, we use the avogadro number which is relationed to the number of moles of any compound so:

1 mol = 6.02x10²³ atoms

In order to know the atoms, we need to calculate the moles of copper with the following expression:

n = m/MW

Doing so, we have the moles, and then, use the avogadro number to calculate the atoms:

First the moles:

n = 3.46/63.55 = 0.0544 moles

Now, let's calculate the atoms:

n° atoms = n * Av. number

n° atoms = 0.0544 ¨* 6.02x10²³

n° atoms = 3.275x10²² atoms

This would be the atoms in the penny.

cytokinesis is the splitting of a cell membrane to form 2 identical daughter cells. it's similar to mitosis as both cells have identical copies of dna and cytokinesis is a step in the mitotic cycle.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).