Neco Model Questions Vol1 2018 Chemistry Question 37

Practice objective / multiple choice question 37 from the 2018 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2018 Chemistry Objective / Multiple Choice Medium Difficulty
Question 37 NECO_MODEL_QUESTIONS_VOL1 • 2018 • CHEMISTRY • objective

150\,g of a solid substance at 25\,°C is heated by a 500\,W heater for 10\,min. The solid has a specific heat capacity of 2.0\,J\,g^{-1}\,K^{-1}, melts at 80\,°C with a latent heat of fusion of 250\,J\,g^{-1}, and its liquid specific heat capacity is 1.5\,J\,g^{-1}\,K^{-1}. After the heating period, what is the final state of the substance and its temperature (in \(^\circ\)C)?

Answer Options

A. Gas, \;\approx 1.5\times10^{3}\,\text{°C}
Correct Answer B. Liquid, \;\approx 1.17\times10^{3}\,\text{°C}
C. Liquid, \;\approx 8.0\times10^{2}\,\text{°C}
D. Solid, \;\approx 2.5\times10^{2}\,\text{°C}
Correct Answer
B
Correct Option:
Liquid, \;\approx 1.17\times10^{3}\,\text{°C}

About This Question

This is Neco Model Questions Vol1 2018 Chemistry Question 37. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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