Select the correct answer. The Lewis structure for carbon hydrogen cyanide (HCN) Is given. What is the three-dimensional shape of the molecule?
H-C=N
OA bent
OB. linear
Octetrahedral
OD. trigonal planar

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.

What is true for a substance that releases energy

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)