- Is NH3 an acid or base, or both?

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Algebra question - motion problem PLEASE HELP!? If time is a dimension would that mean time is a field= E / B x G where E,B and G
are electrical ,magnetic ,and gravity fields? Why do U.S citizens call "Australia" for a continent? Find the limit (if it exists). If it does not exist, explain why. Square root of x -2 / x -4? Y=1/4x+2 plese find the x and y intercepts and show step by step?