Calculate the total mass of these letters in grams (mxe=131.29amu)

The total mass of 131.29 amu

= 2,196.10⁻²² grams

Inside the atom consists of a nucleus containing 3 basic particles namely protons and neutrons, while electrons move around the nucleus.

The mass number is not the same as the atomic mass. The mass number is the number of protons and neutrons in one atom. While the atomic mass is a number that expresses the mass of one atom.

Atomic mass is expressed in special units, namely atomic mass units because the atomic mass is very small if expressed in units of grams or milligrams

This atomic unit uses the standard atomic mass, that is, the C-12 isotope

1 C-12 atom = 12 atomic mass units

1 atomic mass unit = 1/12 x mass 1 atom C-12

The mass of 1 proton is equal to the mass of 1 neutron, equal to 1 atomic mass unit and electrons have a smaller mass than both.

electron mass = 9.11.10⁻²⁸ g

proton mass = 1.6726.10⁻²⁴ g

neutron mass = 1,675.10⁻²⁴ g

The proton mass is considered to be equal to 1 atomic mass unit and a neutron which has a slightly larger mass is also considered to be equal to 1 atomic mass unit

1 unit of atomic mass (amu) = 1.6726.10⁻²⁴ g

So if there are 131.29 amu, you can convert them into

= 131.29 x 1.6726.10⁻²⁴ g

= 219,595.10⁻²⁴

= 2,196.10⁻²² grams

subatomic particles in an atom

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the three particles of an atom

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neutrons

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the mass, charge, and location of protons, neutrons, and electrons in atoms link

statement about subatomic particles

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The subatomic particle that has the least mass

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Keywords: protons, neutrons, electrons, subatomic particles,

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.