A 400-G Block of Ice at - $15.00 ^ { \circ } \mathrm { C }$

question 58

Multiple Choice

A 40.0-g block of ice at - $15.00 ^ { \circ } \mathrm { C }$ is dropped into a calorimeter (of negligible heat capacity) containing water at $15.00 ^ { \circ } \mathrm { C }$ When equilibrium is reached, the final temperature is $8.00 ^ { \circ } \mathrm { C }$ How much water did the calorimeter contain initially? The specific heat of ice is $2090 \mathrm {~J} / \mathrm { kg } \cdot \mathrm { K }$ that of water is $4186 \mathrm {~J} / \mathrm { kg } \cdot \mathrm { K }$ and the latent heat of fusion of water is $33.5 \times 10 ^ { 4 } \mathrm {~J} / \mathrm { kg }$

• A) 302 g
• B) 546 g
• C) 634 g
• D) 405 g
• E) 345 g

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Definitions:

Manufacturing Overhead

Costs related to the manufacturing process but not directly traceable to specific units produced, such as utility costs and salaries of maintenance personnel.

Overhead Variances

Differences between the estimated and actual overhead costs in manufacturing or business operations.

Fixed Manufacturing Overhead

The portion of manufacturing overhead costs that remains constant regardless of the level of production, such as depreciation of equipment and salary of supervisors.

Budget Variance

The difference between budgeted and actual figures for a given period, indicating under or overspending.