How many ions are found in 7.64g of KI?
please show work

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).

Drag each pressure unit with the corresponding number to describe standard atmospheric pressure

The reaction of sodium hydrogen carbonate and acetic acid is described above. using the equation below, identify the proper coefficients for the balanced equation that upholds the law of conversation of mass