Question

A graduated cylinder contains 50 mL of water. You carefully place a rock into the cylinder, causing the water level to rise to 70 mL. If the mass of the rock is 100 grams, explain how to calculate the density of the rock in two to four sentences. Describe each step of the process and provide the final density value for full points. You may write your answer in complete sentences or as a numbered/bulleted list but you must explain all steps for full points. Make it not too long and make it sound like an 8th grader wrote it

Answer 1

To calculate the density of the rock, follow these steps:

1. Find the volume of the rock: The water level rose from 50 mL to 70 mL, so the volume of the rock is the difference: 70 mL - 50 mL = 20 mL.

2. Use the density formula: Density is calculated using the formula density = mass/volume. The mass of the rock is given as 100 grams, and the volume we found is 20 mL.

3. Calculate the density: Plugging the numbers into the formula, we get density = 100 grams / 20 mL = 5 grams/mL.

So, the density of the rock is 5 grams per milliliter.