The Ksp expression for Hg₂Br₂ is Ksp=[Hg₂²⁺] [Br⁻]² and for Fe(OH)₂ it is Ksp=[Fe²⁺] [OH⁻]². How do I know when the 2 stays inside the brackets and when it goes outside the brackets? Thank you!

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g

Convert a speed of 201 cm/s to units of inches per minute. also, show the unit analysis by dragging components into the unit‑factor slots.

Give one example of a pure (exact) number and of an estimated (measured) number.