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Why does liquid water form when we exhale on a mirror? In the descriptions below, I always assume external pressure to be constant at 1 atm, the condition where daily observations are made 1) When I exhale on a mirror, liquid water forms on the mirror
Why is a C4 ring impossible? - Chemistry Stack Exchange A four C ring does exist in many compounds, but it is not possible for double bonds Cumulated double bonds $\ce {C=C=C}$ must be linear, in 1 line They can be bent a little, but it would cause the strain in the bonds, causing instability They definitely cannot be bent in right angles The right angle geometry excludes possibility of overlap of orbitals to form such double bonds
Why does my sea salt have a best by date? [duplicate] @Farooq: As the link in this answer shows, culinary “sea salt” certainly can contain anti-caking agents And as the answer explains, the (potential very slight) deterioration that justifies the “best before” date is not caused by the anti-caking agent, but inhibitied by it Best before dates are never meant to be interpreted as “product expires now — discard it”, but just as