2 Which equation represents a precipitation reaction? A H2CO3 (aq) CO2 (g) + H20 ()
B H2SO4 (aq) + 2NaOH (aq) Na2SO4 (aq) + 2H20 ()
C2H2 (g) + O2 (g) 2H20 (1)
D AgNO3 (aq) + NaOH (aq) AGOH (s) + NaNO3 (aq)

Which answer lists the fundamental forces in order from strongest to weakest

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

Acontrol during an experiment. might change remains constant does not exist does change