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Water H2O Mass ( g ) and Molar Mass

Solutions :

Answer :








Sagot :

Answer:

The average mass of one mole of H2O is 18.02 grams.

This is stated: the molar mass of water is 18.02 g/mol.

Explanation:

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[tex]\Huge{\blue{\boxed{\gray{\tt{ANSWER}}}}}[/tex]

Mass (g)

  • The average mass of one mole of H2O is [tex]\Large\tt{\underline{\green{18\: grams}}}[/tex]

Molar Mass

  • The molar mass of water is [tex]\Large\tt{\underline{\green{18.02\:g/mol}}}[/tex]

[tex]\\[/tex]

[tex]\Huge{\red{\boxed{\gray{\tt{SOLUTION}}}}}[/tex]

Mass (g)

  • If we have one mole of water, then we know that it will have a mass of 2 grams (for 2 moles of H atoms) + 16 grams (for one mole O atom) = 18 grams.
  • [tex]\large\tt{{1g + 1g + 16g = 18 \:g/mol}}[/tex]

Molar Mass

  • Mass of 1 mole of Hydrogen atoms = [tex]\large\tt{{1 \:g/mol}}[/tex]
  • Mass of 1 mole of Oxygen atoms = [tex]\large\tt{{16 \:g/mol}}[/tex]
  • Mass of two moles of Hydrogen atoms = [tex]\large\tt{{ 2 × 1 \:g/mol = 2\:g/mol}}[/tex]
  • Mass of one mole of Oxygen atoms = [tex]\large\tt{{1 × 16 \: g/mol}}[/tex]
  • On adding all the above-obtained values we get, mass of one mole of water = [tex]\large\tt{{2 \:g/mol + 16 \:g/mol = 18.02\: g/mol.}}[/tex]

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