brendonmx8892 brendonmx8892

18-05-2018
Chemistry

contestada

If 89.6 joules of heat are needed to heat 20 g of iron from 30 c to 40 c, what is the specific heat of the iron in j/cg

Respuesta :

mkryukova19 mkryukova19

18-05-2018

Q=cmΔt

Q=89.6 J
m=20g
Δt=t(final)-t(initial)=40-30=10⁰ C

89.6 J=c*20g*10⁰ C

c= 89.6 J/(20g*10⁰ C)=0.448 J/(g*⁰C)

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