How could you identify the bottle
contng Hel using commonia gas ? (2)​

it is called acid bonding

if you're asking what comes out, it's steam.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl

what is the question here. i think you messed up.