Complete the orbital diagram for a ground state chlorine atom matching the letters in the boxes to their corresponding numbers/arrows.

Which of the following compounds contains the most hydrogen atoms per formula?

The electron configuration of a manganese (Mn) ion is [Ar] 3d3.  What is the charge on this ion?

What is the ground-state electron configuration of titanium (Ti)?

When a 45.0 g sample of an alloy at 100.0°C is dropped into 100.0 g of water at 25.0°C, the final temperature is 37.0°C.  What is the specific heat of the alloy?  The specific heat of H2O(l) is  4.184 J∙g–1∙°C–1. 

Anthracene is a polycyclic aromatic hydrocarbon that is a component of tar. Mass analysis reveals that it has the empirical formula C7H5. If the molar mass is 178.23 g/mol, which molecular formula is correct?

Which of the following best represents Avogadro’s number?

A compound was analyzed and found to contain 52.17% C, 13.13% H and 34.78% O. What is the empirical formula for the compound?

When is a noncommercial applicator license required?

Use the given heats of formation to calculate the standard enthalpy of reaction for the following reaction: