Show the 2 possible Lewis structures of the HOCN molecule​

Which of the following elements is a representative element? a. chromium (cr) b. aluminum (al) c. mercury (hg) d. silver (ag)

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?