consider molecules of CS2,and HCN. a)what types of bonds do they contain? b)draw their electron-dot formulas c) are there any lone-pair electrons in these molecules?​

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.

A. is your answer.  hope this  

Aquantity of that isotope to decay to 1/2 of  its original value

The main types of electromagnetic radiation. radio  waves have  the lowest frequencies  and  longest  wavelengths, while gamma  waves have highest frequencies  and shortest wavelengths. the wavelengths vary across the electromagnetic spectrum from about 10–15 m to more than 104 m.hope it !