How many moles of helium are needed to fill a balloon to a volume of 5.8 L at 30 °C and 262 mmHg?

If i add water to oil what will happen

Which are forms of frozen water? check all that apply. dew frost hail rain sleet

Which of these describes how heat is transferred by convection* a. sunlight travels through space without the aid of fluids or solids. b. warm air rises and takes the heat with it, eventually, it cools and sinks c. air at the equator rises and sinks at the poles. d. air molecules touch the warm ground, heating them up *not conduction