Calculate the value of AE for a system that loses 50 J of heat and has 150 J of work Performed on it by the surroundings.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

Why is carbon ideal for making different compounds?