The total positive charge in a solid copper penny : 1.4148 . 10⁵ C
Further explanation
Atoms are composed of 3 types of basic particles namely protons, electrons, and neutrons
the mass of this basic particle is expressed in units of atomic mass
This atomic unit uses the standard atomic mass, that is, the C-12 isotope
1 atom C-12 = 12 atomic mass units
1 atomic mass unit = 1/12 x mass 1 C-12 atom
1 unit of atomic mass = 1.66.10⁻²⁴
the mass of each basic particle in atomic mass units is:
electron mass = 9.11.10⁻²⁸
proton mass = 1.6726.10⁻²⁴
neutron mass = 1,675.10⁻²⁴
The proton mass is considered to be equal to 1 atomic mass unit and a neutron which is also considered to be equal to 1 atomic mass unit
1 unit of atomic mass = 1.6726.10⁻²⁴
The charge of 1 proton is equal to a charge of 1 electron but has a different sign
The proton is positively charged (+1), the electron is negatively charged (-1). and neutrons not charged (neutral)
For a charge of 1 electron = e = 1.66.10⁻¹⁹ coulomb
Whereas the neutron charge = 0
The Atomic Number (Z) indicates the number of protons in an atom of an element. If the atom is neutral then the number of protons will be equal to the number of electrons. So the atomic number can also indicate the number of electrons.
There is 3.1 g of solid copper, so the moles are :
moles = mass : atomic mass of copper
moles = 3.1 g : 63.5
moles = 0.04882
1 mole = 6.02.10²³ particles(atoms, molecules, ions) so
Total particles for a solid copper penny = 0.04882 x 6.02.10²³ = 2.939.10²²
Because The Atomic Number (Z) of copper = 29, so number of proton = 29
Total proton = 29 x 2.939.10²² = 8.5231 . 10 ²³
For a charge of 1 proton = p = 1.66.10⁻¹⁹ coulomb
, then :
Total positive charge = 8.5231 . 10 ²³ x 1.66.10⁻¹⁹ = 1.4148 . 10⁵ C
Learn more
the chemical symbols
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statement about subatomic particles
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The subatomic particle that has the least mass
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Keywords: copper-covered zinc,the total positive charge
