How many moles of (H+) are there in 1 dm3 of 0.5 M solution of H2SO4?

The chemical formula for sulfuric acid is H2SO4, which dissociates into two H+ ions and one sulfate ion (SO42-) when dissolved in water. Therefore, in a 0.5 M solution of H2SO4, the concentration of H+ ions would be twice as much, i.e., 1.0 M. To calculate the number of moles of H+ ions in 1 dm3 of 1.0 M solution, we can use the formula: moles = concentration x volume Substituting the values, we get: moles = 1.0 mol/dm3 x 1 dm3 moles = 1.0 moles Therefore, there are 1.0 moles of H+ ions in 1 dm3 of 0.5 M solution of H2SO4. Hence, the correct answer is 1.0 moles.