Chemistry · THERMODYNAMICS

A sample of 250 g of a substance with molar mass \( 50\text{ g mol}^{-1} \) absorbs heat such that its temperature increases from 298 K to 323 K. If its specific heat capacity is \( 2.40\text{ J g}^{-1}\text{ K}^{-1} \), the total heat absorbed (\( q \)) and the molar heat capacity (\( C_m \)) of the substance are respectively:

1. A
   60.0 kJ and 60.0 J mol⁻¹ K⁻¹
2. B
   15.0 kJ and 60.0 J mol⁻¹ K⁻¹
3. C
   15.0 kJ and 120.0 J mol⁻¹ K⁻¹
4. D
   30.0 kJ and 120.0 J mol⁻¹ K⁻¹