
Concept explainers
Given that the density of gold is 19.3 g/cm3, calculate the volume (in cm3) of a gold nugget with a mass of 5.98 g.
(a)3.23 cm3(b)5.98 cm3(c)115 cm3(d)0.310 cm3(e)13.3 cm3

Interpretation:
The volume (in cm3) of the gold nugget with given massis to be determined.
Concept Introduction:
The relationship between density, volume, and mass is as:
d=mV …… (1)
Here, d is the density, V is the volume,and m is the mass of the given sample.
Density is defined as the ratio of mass of the sample to its volume. It is generally expressed in gcm3.
Answer to Problem 1KSP
Correct answer:
The volume of the given gold nugget is 0.310 cm3. Thus, option (d) is correct.
Explanation of Solution
Reason for correct option:
Use equation (1) to calculate the density of the gold nugget as follows:
d=mV
Now, rearrange equation (1) so that the volume of the gold nugget is calculated as:
V=md
Substitute, 19.3 gcm3 for density (d) and 5.98 g for mass (m) in the above equation as:
V=5.98 g19.3 gcm3=0.30984 cm3≈0.310 cm3
Hence, option (d) is correct.
Reasons for incorrect options:
Option (a) is incorrect because according to the above calculation, the value 3.23 cm3 cannot be obtained. So, it is a wrong answer.
Option (b) is incorrect because according to the above calculation, the value 5.98 cm3 cannot be obtained. So, it is a wrong answer.
Option (c) is incorrect because according to the above calculation, the value 115 cm3 cannot be obtained. So, it is a wrong answer.
Option (e) is incorrect because according to the above calculation, the value 13.3 cm3 cannot be obtained. So, it is a wrong answer.
Hence, options ( a), (b), (c), and (e) are incorrect.
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