Question

When a 8 gram slice of bread is burned under a beaker of 4500 grams of water, it heats up the water by 1.3 degrees Celsius. The specific heat of water is 1 cal/g degree C. How many calories does this slice of bread contain

Answer 1

`5850\ \text{cal}`

Step-by-step explanation:

m = Mass of water = 4500 g

c = Specific heat of water =
`1\ \text{cal/g}^(\circ)\text{C}`

`\Delta T` = Change in temperature of water =
`1.3^(\circ)\text{C}`

Heat is given by

`q=mc\Delta T\\\Rightarrow q=4500* 1* 1.3\\\Rightarrow q=5850\ \text{cal}`

A slice of the bread contains
`5850\ \text{cal}`.