Calculate the change in internal energy (ΔE) for a system that is giving off 35.0 kJ of heat and is changing from 21.00 L to 15.00 L in volume at 1.50 atm pressure. (Remember that 101.3 J = 1 L∙atm)

Who is better, messi or cristiano, i need this for a chemistry class. asap

Elements that do not have full outer electron shells will donate, share, or take electrons from other atoms. choose the items that have the correct binary ionic formula.

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?