What is the ph of a 4.8 m pyridine solution that has kb = 1.9 × 10-9? the equation for the dissociation of pyridine is?

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8