The table shows the chemical formulas for four substances. c8h18https://staarbank. schoolobjects. com/eduphoria_webcontrols/tests/Tes tImage. aspx?bnk=staarbank&aid=9b51137e -2d09-457a-bd71-6bc1f7bd5bb8&mo de=edit
Which substances have the same number of carbon atoms?
A. Substances 1 and 2
B. Substances 1 and 3
C. Substances 2, 3, and 4
D. Substances 2 and 3 only

Which of the following units is not an official si unit? mole liter kilogram ampere

Amixture initially contains a, b, and c in the following concentrations: [a] = 0.300 m , [b] = 1.05 m , and [c] = 0.550 m . the following reaction occurs and equilibrium is established: a+2b⇌c at equilibrium, [a] = 0.140 m and [c] = 0.710 m . calculate the value of the equilibrium constant, kc.

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added