How many moles (of molecules or formula units) are in each sample? a) 1.96 kg CO2
b) 37.0 g KNO3
c) 111.9 kg Na2SO4
Express your answer to three significant figures and include the appropriate units.

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?