A store employee first inflated a balloon with 1.53 moles of helium gas. When the customer said it needed to have a volume of 756 mL the employee filled the balloon with a total of 3.06 moles of gas. What was the first volume of the balloon, in milliliters?

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion