what’s the name and formula for potassium (chloride/nitride/sulfide) ? help me please!!! really appreciate it

Which of these conditions most likely produces an unstable isotope?

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?

Which three statements represent the benefits of performing experiments using computer simulations?