Write the Ka expression for the following generic weak acid reaction HA(aq) + H20(1) --> A (aq) + H30+ (aq)​

An observation that requires measurement is called quantitative observable or qualitative

What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume

What causes most sediment to wash or fall into a river