$\mathbf{q}\mathbf{}\mathbf{=}\mathbf{mc}\mathbf{\u2206}\mathbf{T}\phantom{\rule{0ex}{0ex}}\mathbf{q}\mathbf{=}\mathbf{mc}({T}_{f}-{T}_{i})$

**substitute values:**

**$\mathbf{2110}\mathbf{}\mathbf{J}\mathbf{=}\mathbf{(}\mathbf{44}\mathbf{.}\mathbf{7}\mathbf{}\mathbf{g}\mathbf{)}\mathbf{\left(}\mathbf{c}\mathbf{\right)}\mathbf{(}\mathbf{89}\mathbf{.}\mathbf{6}\mathbf{\xb0}\mathbf{C}\mathbf{-}\mathbf{23}\mathbf{.}\mathbf{2}\mathbf{\xb0}\mathbf{C}\mathbf{)}\phantom{\rule{0ex}{0ex}}\mathbf{2110}\mathbf{}\mathbf{J}\mathbf{=}\mathbf{(}\mathbf{44}\mathbf{.}\mathbf{7}\mathbf{}\mathbf{g}\mathbf{)}\mathbf{\left(}\mathbf{c}\mathbf{\right)}\mathbf{(}\mathbf{66}\mathbf{.}\mathbf{4}\mathbf{\xb0}\mathbf{C}\mathbf{)}$**

A piece of unknown substance weighs 44.7 g and requires 2110 J to increase its temperature from 23.2°C to 89.6°C.

If it is one of the substances found in Table 5.1, what is its likely identity?

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