Question

Pls help ty so much!

If 501 J of heat is available, how many grams
of iron (specific heat = 0.45 J/g °C) can be
heated from 22.5°C to 120.0°C?

Answer 1

`\quad \huge \quad \quad \boxed{ \tt \:Answer }`

`\qquad \tt \rightarrow \:mass = 11.42 \:\: grams`

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`\large \tt Solution \: :`

`\qquad \tt \rightarrow \: Q = ms\Delta T`

• 
  `\textsf{Q = heat evolved/absorbed = 501 J}`

• 
  `\textsf{m = mass in gram = ?}`

• 
  `\textsf{s = specific heat = 0.45}`

• 
  `\textsf{ΔT = change in temp = 120 - 22.5 =97.5°C}`

`\large\textsf{Find m : }`

`\qquad \tt \rightarrow \: 501 = m \sdot(0.45) \sdot(97.5)`

`\qquad \tt \rightarrow \: 501 = m \sdot43.875`

`\qquad \tt \rightarrow \: m = (501)/(43.875)`

`\qquad \tt \rightarrow \: m \approx11.42 \: \: g`

Answered by : ❝ AǫᴜᴀWɪᴢ ❞