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# Based on the molecular diagram, classify each change as ISBN: 9780321809247 1

## Solution for problem 49E Chapter 1

Chemistry: A Molecular Approach | 3rd Edition

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Problem 49E

Based on the molecular diagram, classify each change as physical or chemical. Step-by-Step Solution:
Step 1 of 3

Solution 49 E: Here, we have to calculate the volume of the box having length of each edge is 24.8 cm Let us consider a box with length of each edge is “a” Where a = 24.8 cm Therefore volume of the cube is= a x a x a 3 = a = (24.8 cm) 3 = 15252.99 cm 3 4 3 = 1.52 x 10 cm Thus, the volume of cubic box is found =1.52 x 10 cm 4 3 The uncertainty can be calculated by differentiating the volume with respect to the length of edge. The uncertainty of each edge of the cube is 0.2 cm Volume of the Cube is Suppose V = a 3 dV = da3 da da da = 3a2 2 dV = da x 3a 2 = (0.2 cm) x 3 (24.8cm) = (0.6 x 24.8x24.8)cm 3 = 369.024 cm 3 =0.4 x 10 cm 3 Therefore the uncertainty in the volume of the cube having uncertainty in 0.2 cm edge is 0.4 x 10 cm 3

Step 2 of 3

Step 3 of 3

##### ISBN: 9780321809247

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Based on the molecular diagram, classify each change as