How many moles of S are there 350 g of H2SO4?
the molar mass of sulfuric acid is ... 98.1 g
there is one sulfur atom per molecule of sulfuric acid
find the number of moles by dividing by the molar mass
To calculate the number of moles of S in a given amount of H2SO4, you need to use the molar mass of sulfur (S) and the molar mass of sulfuric acid (H2SO4).
1. Find the molar mass of sulfur (S):
The atomic mass of sulfur is approximately 32.07 g/mol.
2. Calculate the molar mass of sulfuric acid (H2SO4):
To calculate the molar mass of H2SO4, you need to multiply the atomic masses of each element by their respective subscripts, then sum them up.
H2 (hydrogen) = 2 * 1.01 g/mol = 2.02 g/mol
S (sulfur) = 1 * 32.07 g/mol = 32.07 g/mol
O4 (oxygen) = 4 * 16.00 g/mol = 64.00 g/mol
Add up the masses: 2.02 g/mol + 32.07 g/mol + 64.00 g/mol = 98.09 g/mol
3. Calculate the number of moles of sulfur (S):
Use the molar mass of sulfuric acid (98.09 g/mol) to convert the given mass of H2SO4 (350 g) to moles.
moles of H2SO4 = mass (g) / molar mass (g/mol)
moles of S = moles of H2SO4 * (1 mole of S / 1 mole of H2SO4)
Substituting the values:
moles of S = (350 g / 98.09 g/mol) * (1 mole S / 1 mole H2SO4)
Calculate it:
moles of S = 3.568 moles
Therefore, there are approximately 3.568 moles of S in 350 g of H2SO4.