A piece of metal ore weighs 7.25 g.When a student places it into a graduated cylinder containing water,the liquid level rises from 21.25 mL to 25.00 mL.What is the density of the ore?

Question

Quizplus · Accepted Answer

To find the density of the ore, we need to use the formula:

Density = Mass ÷ Volume

We are given the mass of the ore as 7.25 g. To find the volume of the ore, we can use the displacement method. When the ore is placed in the graduated cylinder containing water, the water level rises from 21.25 mL to 25.00 mL. This means that the volume of the ore must be equal to the difference in the water levels, which is:

25.00 mL - 21.25 mL = 3.75 mL

Now that we have our mass and volume, we can calculate the density:

Density = Mass ÷ Volume

Density = 7.25 g ÷ 3.75 mL

Density = 1.93 g/mL

Therefore, the answer is C: 1.93 g/mL.

A Piece of Metal Ore Weighs 7