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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?

Sagot :

AǫᴜᴀWɪᴢ

[tex]\quad \huge \quad \quad \boxed{ \tt \:Answer }[/tex]

[tex]\qquad \tt \rightarrow \:mass = 11.42 \:\: grams [/tex]

____________________________________

[tex] \large \tt Solution \: : [/tex]

[tex]\qquad \tt \rightarrow \: Q = ms\Delta T[/tex]

  • [tex] \textsf{Q = heat evolved/absorbed = 501 J} [/tex]

  • [tex] \textsf{m = mass in gram = ?} [/tex]

  • [tex] \textsf{s = specific heat = 0.45} [/tex]

  • [tex] \textsf{ΔT = change in temp = 120 - 22.5 =97.5°C} [/tex]

[tex] \large\textsf{Find m : } [/tex]

[tex]\qquad \tt \rightarrow \: 501 = m \sdot(0.45) \sdot(97.5)[/tex]

[tex]\qquad \tt \rightarrow \: 501 = m \sdot43.875[/tex]

[tex]\qquad \tt \rightarrow \: m = \dfrac{501}{43.875} [/tex]

[tex]\qquad \tt \rightarrow \: m \approx11.42 \: \: g[/tex]

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

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