Complete the following chart and answer the questions below. You have enough information to fill in every box! Symbol Atomic Number Atomic Mass # of protons # of neutrons Na 12 K 39 38 50 F ON 20 40 20 50 50 69 I 53 127 Mg 12​

What is a metal replacement reaction

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world

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 !