The structure of hydrogen sulphide (Mr = 34.1 g mol-1) is analogous to water (Mr = 18.0 g mol-1). Despite having larger molecular mass than water, the boiling point of hydrogen sulphide at STP is -60.2°C whereas the boiling point of water is 99.61 °C under the same condition. Explain this observation.

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.

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