Drag each tile to the correct box. Not all tiles will be used. A chemical reaction takes place in which energy is released. Arrange the reaction’s characteristics in order from start to finish. lower energy of reactants higher energy of products higher energy of reactants transition state lower energy of products

Evaluate this exponential expression,8. (2 + 3)2 – 42

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.