Igcse Model Questions Vol1 2022 Physics Question 37
Practice objective / multiple choice question 37 from the 2022 Igcse Model Questions Vol1 Physics examination.
An insulated calorimeter contains 500 g of water at \(80^{\circ}\text{C}\). A 200 g aluminium block (specific heat capacity \(c_{\text{Al}} = 900\ \text{J kg}^{-1}\text{K}^{-1}\)) initially at \(20^{\circ}\text{C}\) is placed in the water. After thermal equilibrium the mixture reaches \(45^{\circ}\text{C}\). The calorimeter is then transferred to a freezer where heat is removed at a constant rate of \(120\ \text{J min}^{-1}\).\n\n(a) How long (in minutes) will it take for the mixture to cool from \(45^{\circ}\text{C}\) to \(0^{\circ}\text{C}\)?\n\n(b) After an additional \(30\,000\ \text{J}\) of heat have been removed beyond the \(0^{\circ}\text{C}\) point, how much ice (in grams) will have formed?
Answer Options
About This Question
This is Igcse Model Questions Vol1 2022 Physics Question 37. It is one of the objective questions from the 2022 Igcse Model Questions Vol1 Physics examination.
Difficulty level: Medium .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.