With chemistry, ill give brainliest to whoever can

the mass number of an isotope of uranium is 238, and its atomic number is 92. which symbol best represents this isotope of uranium?

(ignore the answer i chose, i just guessed)

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

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