A) For each given scenario, assume that each object is at sea level.

What is the weight in lbflbf of a 21.0 lbm21.0 lbm child?

weight: lbflbf

What is the mass in kilograms of a box weighing 26.0 newtons?26.0 newtons?

mass: kgkg

What is the weight in dynes of a 15.5 ton15.5 ton truck (not metric ton)?

weight: dynes

B) The molecular weight and density of isopropyl alcohol are 60.09 g/mol60.09 g/mol and 0.784 g/mL0.784 g/mL, respectively. You divide the molecular weight by density to find the molar volume of isopropyl alcohol. The volume comes out to be 76.645408163.

What is the answer stated with the correct significant figures?

76.65 mL/mol76.65 mL/mol

76.645408163 mL/mol76.645408163 mL/mol

76.64540 mL/mol76.64540 mL/mol

76.6 mL/mol