QUESTION: Fix punctuation: Once you have placed your bets click the Deal button to begin the hand
ANS: Once you have placed your bets, click the 'Deal' button to begin the hand.

QUESTION: Fix punctuation: Phosgene carbonyl chloride 2812 10 94
ANS: Phosgene (carbonyl chloride) 2812 10 94

QUESTION: Fix punctuation: The modern era in Thai history began in 1932 when a westernized military elite staged a coup detat and made the king accept the role of constitutional monarch
ANS: The modern era in Thai history began in 1932 when a westernized military elite staged a coup d'etat and made the king accept the role of constitutional monarch.

QUESTION: Fix punctuation: The big woman isnt fat but pregnant
ANS:
The big woman isn't fat, but pregnant.