how many moles are there in 49gh2 so4?

H2SO4 has a mole weight of 1(2)+32+16(4) = 2+32+64 = 98

so, 49g is 0.5 mole

To determine the number of moles in a chemical formula, you need to know the molar mass of the compound. The molar mass is the sum of the atomic masses of all the atoms in the formula.

To calculate the molar mass of H2SO4:
- Hydrogen (H) has an atomic mass of 1.01 g/mol
- Sulfur (S) has an atomic mass of 32.07 g/mol
- Oxygen (O) has an atomic mass of 16.00 g/mol (there are four oxygen atoms in H2SO4)

Now we can calculate the molar mass of H2SO4:

Molar mass of H2SO4 = (2 * atomic mass of H) + atomic mass of S + (4 * atomic mass of O)
= (2 * 1.01 g/mol) + 32.07 g/mol + (4 * 16.00 g/mol)
= 2.02 g/mol + 32.07 g/mol + 64.00 g/mol
= 98.09 g/mol

Next, we can use the given mass of 49 g H2SO4 to calculate the number of moles:

Number of moles = mass / molar mass
= 49 g / 98.09 g/mol
= 0.499 mol (rounded to three decimal places)

Therefore, there are approximately 0.499 moles of H2SO4 in 49 g of H2SO4.