Question

How much energy must be added to a 1 kg piece of gold with a specific heat of 130 j/kg to increase its temperature from 20 c to 100c?

Answer 1

Answer: 48,000 J

Step-by-step explanation:

Hope it helps

Answer 2

`Q = 10.4 \; \text{kJ}`

The specific heat of a material gives the energy it takes to increase the temperature of one unit mass of the material by one unit temperature. The SI unit for specific heat
`c` is therefore
`\text{J} /\text{kg} \cdot \textdegree{\text{C}}`.

The formula relating the energy required to raise the temperature of
`m` grams of a substance with specific energy
`c` by
`\Delta T` degrees is

`Q= c \cdot m \cdot \Delta T`

The question provides the following information:

• 
  `c = 130\; \text{J} /\text{kg} \cdot \textdegree{\text{C}}` for gold
• 
  `m= 1 \; \text{kg}`
• 
  `\Delta T = 100 \textdegree{\text{C}} - 20 \textdegree{\text{C}} = 80 \textdegree{\text{C}}`

Apply the formula:

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