How much mass of silica reacts if it is known that 788.4 kJ of heat was released by its reaction with fluorine, but the thermochemical
equation of the reaction is as follows
SiO2 + 2F2 ---> SiF4 + O2 + 657kJ​

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration