a graduated cylinder has a mass of 50 g when empty. when 30 ml of oil is added, the graduated cylinder and…
a graduated cylinder has a mass of 50 g when empty. when 30 ml of oil is added, the graduated cylinder and oil now has a mass of 74 g. if a rock is added to the graduated cylinder, the oil level rises to 80 ml and the total mass is now 250g.\nwhat is the density of the rock?\nwhat is the density of the oil?
Answer
Explanation:
Step1: Find mass of oil
Mass of oil = 74 g - 50 g = 24 g
Step2: Find volume of oil
Volume of oil = 30 mL
Step3: Calculate oil density
Density of oil = $\frac{24\ g}{30\ mL}$ = 0.8 g/mL
Step4: Find volume of rock
Volume of rock = 80 mL - 30 mL = 50 mL
Step5: Find mass of rock
Mass of rock = 250 g - 74 g = 176 g
Step6: Calculate rock density
Density of rock = $\frac{176\ g}{50\ mL}$ = 3.52 g/mL
Answer:
Density of oil: 0.8 g/mL, Density of rock: 3.52 g/mL