How Much Energy Must Be Added to a 8 $14 ^ { \circ } \mathrm { C } \text { ? }$

question 30

Multiple Choice

How much energy must be added to a 8.0-kg block of ice at -8°C to change it to water at $14 ^ { \circ } \mathrm { C } \text { ? }$ The specific heat of ice is 2050 J/kg ∙ C°,the specific heat of water is 4186 J/kg ∙ C°,the latent heat of fusion of ice is 334,000 J/kg,and 1 cal = 4.186 J.

• A)780 kcal
• B)140 kcal
• C)180 kcal
• D)810 kcal
• E)730 kcal

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Vertical Axis

In graphing, the y-axis which typically represents the range of values for a dependent variable or measure of interest.

Line Graph

A graphical representation of data where individual data points connected by straight lines show trends over time or category.

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The initial set of measurements or observations taken in a study, used as a reference point for assessing change or effects of interventions.

Intervention

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