In the reaction k2cro4(aq)+pbcl2(aq)-> 2kcl(aq)+pbcro4(s), how many grams of pbcro4 will percipitate out from the reaction between 500.0 of 3.0 m of k2cro4 in an excess of pbcl2

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next

Why does ammonia, nh3, behave as a base when it reacts with an acid? z