Given 390 moles of potassium chlorate (KClO3) how many moles of oxygen (O2) would be produced? 2 KClO3 2 KCl + 3 O2

a.780 moles of O2
b.260 moles of O2
c.585 moles of O2
d.130 moles of O2

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1:

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

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 !