Distinguishing solid, liquid and gas phases of à pure sub There are three sets o

Question

Distinguishing solid, liquid and gas phases of à pure sub There are three sets of sketches below, showing the same pure molecular compound (carbon monoxide, molecular formula CO) at three different temperatures. The sketches are drawn as If a sample of carbon monoxide were under a microscope so sketch in each set is correct powerful that individual atoms could be seen. Only one Use the slider to choose the correct sketch in each set. You may need the following information melting point of CO:-205, oc boiling point of CO.-192°C 198 -210."C 7 4 5 8 9

Explanation / Answer

Molecular structure for CO

The solid CO first melts at -2o5 oC

then liquid CO boils at -192 oC

So the order of pictures would be,

C (solid CO) ---> A (liquid CO) ---> B

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