The number 6.02 × 10²³ is called Avogadro number. It is the number of atoms, ions and molecules in one gram atoms of an element, one gram ions of substance and one gram molecule of a compound.

For example:

32 g of oxygen = one mole = 6.02 × 10²³ atoms O.

1.008 g of hydrogen = one mole = 6.02 × 10²³ atoms of H.

18 g of H₂O =one mole = 6.02 × 10²³ molecules of H₂O

44 g of CO₂ = one mole = 6.02 × 10²³ molecules of CO₂

62 g of NO₃⁻ = one mole of NO₃⁻ = 6.02 × 10²³ ions of NO₃⁻

5 0

3 years ago

If 0.600mol of chloride gas reacted with 0.500mol of aluminium metal to produce aluminium chloride,which reactant is in excess?h

alisha [4.7K]

Answer:

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Explanation:

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5 0

2 years ago

Which of the following is an example of a chemical change? A. melting solid gold B. burning hydrogen gas C. breaking a sheet of

cestrela7 [59]

The answer is B. Burning hydrogen gas

5 0

3 years ago