How many molecules of H2 SO4 are there in a 49g sample?

To find the number of molecules in a 49g sample of sulfuric acid (H₂SO₄), we first calculate its molar mass. The molar mass of H₂SO₄ is approximately 98.08 g/mol. Dividing the mass of the sample (49 g) by the molar mass gives us the number of moles: 49 g / 98.08 g/mol ≈ 0.499 moles. Finally, multiplying the number of moles by Avogadro's number (approximately 6.022 x 10²³ molecules/mol) yields roughly 3.00 x 10²³ molecules of H₂SO₄ in the sample.