How many fluorine atoms are in 750.0 mL of a 0.500M HF solution (please show the steps)

C) 6.69 x 1021

Here is your Asher mis/mr

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)