URGENT. URGENT. URGENT.
How much heat is required to raise the temperature of 225g of lead from 25⁰C to 60⁰C. The specific heat of lead is 0.128J/(g⁰C).
Please show all work for full credit.

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A piece of unknown metal has a heat capacity of 222 J for 1⁰C and a mass of 246 g. Calculate the specific heat of this metal. Identify the metal. Please show all work for full credit.

Explanation:

1)

Given data:

Heat required = ?

Mass of sample = 225 g

Initial temperature = 25°C

Final temperature = 60°C

Specific heat capacity of lead = 0.128 j/g°C

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT =  60°C - 25°C

ΔT = 35°C

Q = 225 g × 0.128 j/g°C × 35°C

Q = 1008 j

2)

Given data:

Heat capacity for 1°C = 222 j

Mass of sample = 246 g

Specific heat capacity of sample = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

222 j = 246 g × c × 1°C

c = 222 j / 246 g.°C

c = 0.902 j/g.°C

The given metal is aluminium.

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.