Are ionic compounds not carrying a charge?

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

Joan writes four numbers on the board in standard form, and then she writes their scientific notation