Answer: 3.32 moles
Explanation:
Water has a chemical formula of H2O.
Now given that:
Number of moles = ?
Mass in grams = 59.75 grams
Molar mass of water H2O = ?
Use the atomic mass of hydrogen = 2g, Oxygen = 16g
So, H2O = (2 x 1) + 16
= 2 + 16 = 18g/mol
Recall that:
Number of moles = (Mass in grams/ Molar mass)
No. of moles = 59.75 grams / 18g/mol
= 3.32 moles
Thus, there are 3.32 moles of water present
Answer:
3.32moles
Explanation:
Number of moles of a substance is given by
n = mass of the substance given(grams) / molar mass of the substance(grams per mole)
Chemical formula for water is H2O
mass of H2O given = 59.75grams
molar mass of H2O = (2 X molar mass of Hydrogen) + molar mass of oxygen
Molar mass of hydrogen =
1.00784u ~ 1u
Molar mass of oxygen =
15.999u ~ 16u
Molar mass of H2O = (2 X 1) + 16
= 18 g/mol
n = (59.75g) / (18g/mol)
n = 3.32mol
Therefore, there are 3.32 moles in 59.75 grams of water
