Gaining or losing can cause an atom to have an overall electric charge. a. neutrons. b. electrons. c. protons. d. nuclei (more than one nucleus)

What is the type of the reaction below? bacl2 + h2so4 → 2 hci + baso4 double replacement synthesis single replacement decomposition

10 points! will mark brainiest! in a heat engine if 1,000 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 initial energy was 2,000 j 1: write the equation2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!

In which type of system is power held solely by the central government and not shared with regional governments? group of answer choices federal unitary confederate oligarchic