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Is iodine (I2) more soluble in water or carbon disulfide (CS2)? Why?

1. Under water where the temperature is 17oC and the pressure is 394 kPa, a diver inhales 2.1 L of air from his SCUBA tank. a) How many moles of gas are in his lungs? b) If the diver swims to the surface without exhaling where the temperature is 32oC and...

17.5 mL of oxygen gas were collected at room temperature (22oC) and 100.2 kPa of atmospheric pressure. a) How many moles of oxygen gas were produced? b) What is the molar volume of the oxygen gas at the conditions in the laboratory?

Which measuring device would you use if you needed to know the volume of a liquid very precisely?Why?