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JAMB Chemistry 2015 Paper

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Question : 23

Total: 64

A fixed mass of gas occupies 92cm3 at 3°C. What will be its volume at 18C if the pressure remains constant?

15.3cm³
87.3cm³
2.0cm³
97.0cm³

Solution:

$\frac{V_{1}}{T_{1}}$ = $\frac{V_{2}}{T_{2}}$

T_{1}

= 3 + 273 = 276K

T_{2}

= 18 + 273 = 291K

V_{1}

=

92\,\mathrm{cm}^{3}

V_{2}

= ?

V_{2}

=

\frac{V_{1}T_{2}}{T_{1}}

= $\frac{92 \times 291}{276}$

=

97.0\,\mathrm{cm}^{3}

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