What mass of sulfur tetrafluoride forms when 50.0 mL of 1.25 M NaF reacts completely?
3 SC12(1) + 4 NaF(aq) -> SF4(g) + S2C12(aq) + 4 NaCl(aq)

they are made of gases.

they have a spherical shape.

they make energy through fusion.

the dependant variable is spilled water

the independent is the heat

catya that's not even a b or c

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.