If it takes 50.0 ml of 0.5 m ca(oh)2 solution to completely neutralize 125 ml of hno solution, what is the concentration of the hno3 solution?

the balanced equation for the reaction is

Ca(OH)₂ + 2HNO₃ ---> Ca(NO₃)₂ + 2H₂O

Molar ratio of Ca(OH)₂ to HNO₃ is 1:2

Number of moles of Ca(OH)₂ reacted - 0.5 moldm⁻³ x 50.0 x 10⁻³ dm³

number of Ca(OH)₂ moles  - 0.025 mol

according to the molar ratio

1 mol of Ca(OH)₂ reacts with 2 mol of HNO₃

therefore 0.025 mol of Ca(OH)₂ reacts with - 2 x 0.025 = 0.05 mol of HNO₃

there are 0.05 mol of HNO₃ in 125 mL

and concentration = number of moles / volume in 1 dm³

concentration = 0.05 mol / 125 x 10⁻³ dm

concentration of HNO₃ = 0.4 mol/dm³

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

answermeridional ;