How much does 2 moles of NaCl (molar mass =58g) weigh? a. 116 g
b. 72 g
c. 80 g
d. 58 g

Why do sodium and neon have vastly different chemical and physical properties despite having similar atomic masses?

Aaspirin has a density of 1.40 g/cm^3 what is the volume in cubic centimeters of a tablet weighing 320 mg?

Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?