write the formulae of the acid and the base that produce each of the following salts:HNO3, Pb(CH3COO)2,ZnS and (NH4)2CO3​

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line