Assume you are 25 and earn $35,000 per year, never expect to receive a raise, and plan to retire at age 55. If you invest 5 percent of your salary in a 401(k) plan returning 10 percent annually, and the company provides a $0.50 per $1.00 match on your con

To determine the number of molecules of isopropyl alcohol in a 50 mL bottle, we first need to calculate the mass of the isopropyl alcohol in the bottle. Using the density of isopropyl alcohol given (0.786 g/mL), we can calculate that the mass of the isopropyl alcohol in the bottle is: mass = density x volume mass = 0.786 g/mL x 50 mL mass = 39.3 g Next, we need to convert the mass of the isopropyl alcohol to the number of molecules. To do this, we use the molar mass of isopropyl alcohol, which is 60.1 g/mol. We can calculate the number of moles of isopropyl alcohol using the following equation: moles = mass / molar mass moles = 39.3 g / 60.1 g/mol moles = 0.654 mol Finally, we can calculate the number of molecules of isopropyl alcohol using Avogadro's number, which is 6.02 x 10^23 molecules/mol. Thus: number of molecules = moles x Avogadro's number number of molecules = 0.654 mol x 6.02 x 10^23 molecules/mol number of molecules = 3.94 x 10^23 molecules Therefore, there are \approx imately 3.94 x 10^23 molecules of isopropyl alcohol in a 50 mL bottle.