The maximum concentration set by the u. s. environmental protection agency for lead in drinking water is 15 ppb. -what is this concentration in milligrams per liter? -how many liters of water contaminated at this maximum level must you drink to consume 1.0 μg of lead? can someone just guide me through the steps for ! (: ,

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

Which type of reaction always has an element and a compound as reactants

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.