The Mass of an Object Is Equal to Its Density $D$

question 14

Multiple Choice

The mass of an object is equal to its density times its volume, or m = DV.
a. Solve this equation for $D$ .
b. The mass of a sample of iron ore is $9.92$ grams and its volume is $3.1 \mathrm {~cm} ^ { 3 }$ . Find the density of the o Round to one decimal place.

• A) a. \(D = m - V\)
• b. \(6.8 \mathrm {~g} / \mathrm { cm } ^ { 3 }\)
• B) а. \(D = \frac { V } { m }\)
• b. \(0.3 \mathrm {~g} / \mathrm { cm } ^ { 3 }\)
• C) a. \(D = \frac { m } { V }\)
• b. \(3.2 \mathrm {~g} / \mathrm { cm } ^ { 3 }\)
• D) a. \(D = m V\)
• b. \(30.8 \mathrm {~g} / \mathrm { cm } ^ { 3 }\)

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