Question

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Date:
Lab 2:
Density and Specific Heat
Pre-lab questions:
1. Density of aluminum is 2.702 g/cm². Calculate the mass of a rectangular aluminum solid with a length
of 7.45 cm, a width of 4.78 cm, and a height of 5.25 cm.
2. When measuring mass and volume of a liquid or gas to determine density, temperature must be
measured. Why does it depend on the temperature?

Answer 1

1. 505g is the mass of the aluminium.

2. The answer is in the explanation

Step-by-step explanation:

1. To solve this question we need to find the volume of the rectangle. With the volume and density we can find the mass of the solid:

Volume = 7.45cm*4.78cm*5.25cm

Volume = 187cm³

Mass:

187cm³ * (2.702g/cm³) = 505g is the mass of the aluminium

2. When the temperature of a liquid increases, the volume increases doing the density decreases because density is inversely proportional to volume. And works in the same way for gases because the temperature produce more collisions and the increasing in volume.