The amount of water needed to fill the graduated cylinder to the 100 mL line would be 97.22 mL
The density of a substance is mathematically given as:
Density = mass (in grams)/ volume (in liters)
In this case, the density of a copper that weighs 25 g is given as 9g/mL. Thus, the volume of the copper can be deduced.
volume = mass/density = 25/9 = 2.78 L
The volume of the copper is 2.78 L.
According to Archimedes's principle, a solid will always displace its own volume when dropped into a liquid.
Therefore, if the copper is placed in a 100 mL graduated cylinder, the amount of water needed to fill up the cylinder to the 100 mL mark would be:
100 - 2.78 = 97.22 mL
More on density can be found here: https://brainly.com/question/15164682
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