Which coefficient is needed in front of NaNO3 to balance the equation Na2S + Zn(NO3)2 – ZnS + _NaNO3? O 1
O 2
O 5
O 7

When the volume and number of particles of a gas are constant which of the following is also constant

How does a hydroelectric power plant converts energy into energy.

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.