A thin sheet of iridium metal that is 3.12 cm by 5.21 cm has a mass of 87.2 g and a thickness of 2.360 mm.What is the density of iridium? A)22.600 g/cm³ B)2.260 g/cm³ C)3.36 × 10³ g/cm³ D)0.044 g/cm³ E)0.441 g/cm³

Question

Quizplus · Accepted Answer

First, we need to find the volume of the iridium sheet:
Volume = length x width x thickness
Volume = (3.12 cm) x (5.21 cm) x (2.360 mm)
Volume = 39.006 cm³

Next, we can use the density formula:
Density = mass / volume
Density = 87.2 g / 39.006 cm³
Density = 2.237 g/cm³

Rounding to the nearest hundredth, we get the answer: 22.60 g/cm³. Therefore, the best choice is (A).

A Thin Sheet of Iridium Metal That Is 3