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?

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.

Based on its chemical properties, identify the position of each chemical family on the periodic table.