There are four isotopes of lead and their relative abundance listed below.  use this information to calculate the approximate atomic mass of lead.  show all work   (4 points)                     82 protons, 122 neutrons, 1.4%                     82 protons, 125 neutrons, 22.1%                   82 protons, 124 neutrons, 24.1%                 82 protons, 126 neutrons, 52.4% show !

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy