is a common mathematical technique used in chemistry to convert in this experiment the measured length of the lab book in inches to centimeter and millimeter.

How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules

Need what is special about water as a compound? how does water regulate climate? what drives water evaporation?   why is the water vapor fresh water when it rises from the ocean? why might freshwater in the form of snow take longer to enter the water cycle again than liquid precipitation?   what is an aquifer? what role do people play in the water cycle? plz just answer as many as you can ! thx if you !