Question

Which of the following (with specific heat capacity provided) would require the most energy to increase temperature by 1 deg C?

Group of answer choices:
a. 1.0 g O2(g) (Cs = 0.918 J/g oC)
b. 1.0 g Si(s) (Cs = 0.712 J/g oC)
c. 1.0 g CO2(g) (Cs = 0.853 J/g oC)
d. 1.0 g Fe(s) (Cs = 0.449 J/g oC)
e. 1.0 g Ar(g) (Cs = 0.522 J/g oC)

Answer 1

Oxygen gas (O2(g)) with a specific heat of 0.918 J/g°C requires the most energy to increase its temperature by 1 deg C out of the given substances.Hence, option A is the correct answer.

Step-by-step explanation:

To determine which substance would require the most energy to increase its temperature by 1 deg C, we need to consider the specific heat (Cs) of each substance. The specific heat is defined as the number of joules required to raise the temperature of 1 gram of a substance by 1°C. Here are the specific heat values for the given substances:

• O2(g): 0.918 J/g°C
• Si(s): 0.712 J/g°C
• CO2(g): 0.853 J/g°C
• Fe(s): 0.449 J/g°C
• Ar(g): 0.522 J/g°C

Among the given options, oxygen gas (O2(g)) has the highest specific heat capacity, meaning it would require the most energy to raise the temperature of 1.0 g by 1 deg C.