Question

an atom of oxygen weighs 2.656× 10- ²³g. calculate the number of atoms in 12g of magnesium



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Answer 1

Explanation:

Atomic mass: Mass of an atom of an element, expressedin

Atomic mass: Mass of an atom of an element, expressed in atomic mass units

Atomic mass unit (amu): 1.661 x 10-24g

Atomic mass unit (amu): 1.661 x 10-24g

Atomic weight: Average mass of all isotopes of a given

Atomic mass unit (amu): 1.661 x 10-24g Atomic weight: Average mass of all isotopes of a given element; listed on the periodic table

The main points of Dalton's atomic theory are: Everything is composed of atoms, which are the indivisible building blocks of matter and cannot be destroyed. All atoms of an element are identical. ... A chemical reaction results in the rearrangement of atoms in the reactant and product compounds.

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Answer 2

Answer:

Atomic mass: Mass of an atom of an element, expressed in

Atomic mass: Mass of an atom of an element, expressed in atomic mass units

Atomic mass unit (amu): 1.661 x 10-24g

Atomic mass unit (amu): 1.661 x 10-24g Atomic weight: Average mass of all isotopes of a given

Atomic mass unit (amu): 1.661 x 10-24g Atomic weight: Average mass of all isotopes of a given element; listed on the periodic table