Question

An unknown metal is found. Its volume is 9.90 cm3, and its mass is 82.9 g. Calculate the density of the metal and its identity based on the chart of known densities of metals. Use the chart on the test to answer. Show work and use proper symbols and units. Industrialization in the United States contributed most directly to—

A. sharp increases in the price of manufactured goods
B. an improved standard of living for most Americans
C. the disappearance of class and social differences
D. the decline in the importance of education

Answer 1

The density of the unknown metal is calculated using the formula D = m/V, where D is density, m is mass, and V is volume. The metal's mass is 82.9 g and its volume is 9.90 cm³, resulting in a density of 8.37 g/cm³. This density value should be used to identify the metal based on a comparison with the chart of known metal densities.

Step-by-step explanation:

To calculate the density of the unknown metal, use the formula for density, which is defined as mass per unit volume: D = m/V, where D is density, m is mass, and V is volume.

The mass of the unknown metal is given as 82.9 g, and the volume is 9.90 cm³. Substituting these values into the formula:

D = 82.9 g / 9.90 cm³

Therefore, the density of the metal is:

D = 8.37 g/cm³

Comparing this density to the chart of known densities of metals will help identify the metal. The exact metal cannot be identified without the chart provided during the test, but the given value should be matched to the closest density of a metal listed in the chart to determine the metal's identity.