After vandalizing a local community center, Sarah participates in a program where she meets with the center’s staff and community members to discuss the harm she caused and to work out how she can repair the damage. This process focuses on healing for victims and accountability for offenders. What justice approach is being applied?

A “smoot” is a unit of length originated as a joke at MIT in the 1950’s. One smoot, defined as the height of its originator (Oliver Smoot) is equivalent to 1.700 m. Convert a distance of 0.0205 miles into units of smoots, including to the correct number of significant digits.

What is the concentration (in M) of a 20.0 mL solution made by diluting 0.010 L of 0.50 M NaCl (aq)? For credit, enter your answer to the correct number of significant digits.

In which of the following reactions is HCl being reduced?

The combustion of methane (CH4) is described by the following equation: CH4 (g) + 2 O2 (g)  CO2 (g) + 2 H2O (g) Calculate ΔHo (in kJ/mol) for the above reaction given the following information: ΔH°f  of CH4 (g)   =

Consider the hypothetical reaction: A + 2B  → C + 2D.  Calculate ΔHrxn (in kJ/mol) for the reaction given the following information:      D → A + C ΔH = 80 kJ/mol 0.5 D + C → B ΔH = –10 kJ/mol

Which has the LARGER mass?

A and B react according to the following equation: 2A + 3B ⟶ C. How many moles of B are required to react with 5.0 moles of A?  For credit, enter your answer to the correct number of significant digits.

Consider microwave radiation with a wavelength of 10 cm.  What are the frequency and energy per photon of this radiation?

A and B react according to the following equation: 2A + B ⟶ 3C.  In which of the following scenarios is A the limiting reagent?