Question

Q: At the end of the reaction, Marco finds that the mass of the contents of the beaker is 247g. He repeats the experiment and gets the same result.

a: has he made a mistake?

b: suggest why Marco got this result.

(don't tell me to google it since that won't work and don't tell me some random fact just answer it =_= )​​

Answer 1

Answer:

plz make me brilliant plz make me brilliant plz