Assuming oxygen to be an ideal gas, how many grams of oxygen will occupy a volume of 1.6 mi at a pressure of 200 kPa and a temperature of 27°C?
(The molecular mass of oxygen = 32 g/mol: R= 8.314 J/mol. K)

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.