Question

You are given a toy car. It has a mass of 780 grams. You use water displacement to find the volume. Before putting the car in the graduated cylinder, it reads 100.00 mL. You add the car, and it then reads 196.9 mL. What is the density of the car?

A) 3.90 g/mL
B) 0.22 g/mL
C) 5.58 g/mL
D) 0.14 g/mL

Answer 1

The density of the toy car is 8.02 g/mL.

Step-by-step explanation:

To find the density of the toy car, we need to determine its volume and mass. The volume of the car can be calculated by subtracting the initial volume of the water in the graduated cylinder from the final volume after adding the car. In this case, the volume of the car is 196.9 mL - 100.00 mL = 96.9 mL.

The density is calculated by dividing the mass of the car by its volume. The mass of the car is given as 780 grams. Therefore, the density of the car is 780 g / 96.9 mL = 8.02 g/mL.

Option A) 3.90 g/mL, option B) 0.22 g/mL, option C) 5.58 g/mL, and option D) 0.14 g/mL are not the correct answers.