This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Step 1: Identify the given values. The heat gained (Q) is 439.2 J. The mass of the substance (m) is 9 g. The change in temperature ( T) is 20 °C. Step 2: Use the formula for specific heat capacity. The formula relating heat, mass, specific heat capacity, and temperature change is: Q = mc T Where c is the specific heat capacity. To find c, we rearrange the formula: c = (Q)/(m T) Step 3: Substitute the values and calculate. c = 439.2 J(9 g)(20 °C) c = 439.2 J180 g · °C c = 2.44 J/g · °C Step 4: Compare the result with the given options. The calculated specific heat capacity is 2.44 J/g · °C. The options provided are: 1: 2.44 2: 4.18 3: 2.06 4: 0.449 The calculated value matches option 1. The specific heat capacity of the substance is 2.44 J/g · °C.