Answer:
0.454 kg
Explanation:
The mass of the tungsten block can be found using the following steps:
Calculate the volume of the block:
Volume = length x width x height
Volume = 8.20 cm x 2.20 cm x 1.30 cm = 23.224 cm³
Convert the volume to cubic meters:
Volume = 23.224 cm³ x (1 m / 100 cm)³
Volume = 2.3224 x 10⁻⁵ m³
Calculate the mass of the block using the density:
Mass = density x volume
Mass = 19.35 g/cm³ x 2.3224 x 10⁻⁵ m³
Mass = 0.4477 g
Convert the mass to kilograms and round to the appropriate number of significant figures:
The least precise measurement has 3 significant figures (8.20 cm).
Therefore, the final answer should also have 3 significant figures.
Mass = 0.4477 g / 1000 g/kg
Mass ≈ 0.454 kg (rounded to 3 significant figures)
Therefore, the mass of the tungsten block is approximately 0.454 kg.
