5. Water with a mass of 35.4 g is added to an empty flask with a mass of 87.432 g.
The mass of the flask and the water is 146.72 g after a rubber
stopper is added.
What is the mass of the stopper to the correct number of
significant figures.

most likely he is cheating on you

you did not give any options thus this is the best answer i can give to you with this little information you have given

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water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.

c

explanation: