Question

a graduated cylinder has a mass of 50 g when empty. when 30 mL of water is added, the graduated cylinder has a mass of 120 g. if a rock is added to the grand cylinder, the water level rises to 75 mL and the total mass is now 250 g. what is the density of the rock?

Answer 1

Answer:

The answer to your question is:

a) The gold cube is larger.

b) lenght = 1.67 cm

Explanation:

Data

Platinum    density  21.45 g/cm3          100 gram cube

Gold           density  19.3 g/cm3            100 gram cube

Formula

           density = mass / volume

a) Calculate volume

           volume = mass / density

      

Platinum    volume = 100 / 21.45 = 4.66 cm3

Gold           volume = 100 / 19.3 = 5.18 cm3

b)  Volume = lenght³

   4.66 cm³ = lenght³

   lenght = ∛4.66

   lenght = 1.67 cm