1. This graph shows the energy involved in a reaction involving two molecules. Describe what is happening or what the state of the reaction is at A, B, C, and D. Then tell if this is an exothermic or an endothermic reaction.

1) 3MgCl2 coefficient: Subscript for Mg: Subscript for CI:

Identify the type of hybrid orbitals present and bond angles for a molecule with a tetrahedral shape

Would a solution of baking soda turn pH paper red or blue? Explain your answer in terms of pH.

You are asked to prepare a pH=4.00 buffer starting from 1.50 L of 0.0200 M solution of benzoic acid (C6H5COOH) and an excess of sodium benzoate (C6H5COONa). You may want to reference (Pages 721 - 728) Section 17.2 while completing this problem.

How many valence electrons does N2 have after the bond? Is it 2, 6, or 8 electrons?

Iron metal has a specific heat of 0.449J/g°C. How much heat is transferred to a 5.00 a piece of iron, initially at 20.0°C, when it is placed in a beaker of boiling water at 1 atm? Use Q = mcAt formula For chemistry

Which type of change occurs when the electrons of two atoms interact to form an atomic bond?

Which of the following is considered electronically perfect? a) Potassium b) Magnesium c) Argon d) Chlorine

The area of the circular base of a can of dog food is 12.5 in. The can is 6 inches high. What is its volume?

What is the tested variable in the experiment?