What is the vapor pressure of ethanol (in mmHg) at 52.7°C if its vapor pressure is 400.0 mmHg at 63.5°C? (∆Hvap = 39.3 kJ/mol; R = 8.314 J/K • mol)

What is important to study for nios grade 12 chemistry? i have only one month left.

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

Which of the following ocean acidification? are the most likely side effects of a ph less than 7.0 in the ocean b. more metal salts altering the ocean chemistry c. dissolution of the shells of marine organisms d. both a & b e. all of the above.