Hi i am total indian i have one question how to less the gravity of earth ? ✔​

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.

Why does ammonia, nh3, behave as a base when it reacts with an acid? z

Calculate the mass of 0.750 mol of the following substance. na3po4. , i'm not quite sure on how to set up the problem to solve! : (