Burning coal produces which type of gas?

carbon dioxide

hydrogen

nitrogen

oxygen

Which solution is an example of a nonelectrolyte? a. iodine in hexane b. sodium nitrate in waterc. acetic acid in waterd. hydrogen chloride in water

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

Which of the following is true about the speed of light? it depends on the wavelength.