С14H30= 3C2H4 + ?

Please help I'm really bad with science lol​

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.