The triple point of carbon dioxide is $216.55 \mathrm{~K}$ the cofresponding temperature on the celsius and Fahrepheit scale fespectrvely' are $56-45^{\circ} \mathrm{C},-69,61^{\circ} \mathrm{F}$
(b) $-56.45^{\circ} \mathrm{C}, 69.61^{\circ} \mathrm{F}$
(a) $56,45^{\circ} \mathrm{C}, 69.61^{\circ} \mathrm{J}^{2}$
(d) $-56.15^{\circ} \mathrm{C}_{-1}-69.61^{\circ} \mathrm{F}$