Chapter 1, Problem 1.40E

The average micro-nano plastic concentration in bottled water was about 2.4×10^5 particles per liter of bottled water, about 90% of which were nano-sized particles. Assuming that each nanoparticle can be approximated as a sphere with a diameter of 100 nm and that the average density of nanoparticles is 1.2 g/cm^3, estimate the mass of nanoparticles ingested if someone drinks all of their recommended 64 fluid ounces of water per day via bottled water every day for a year. Provide your answer is units of nanograms (ng).

A cylindrical bar was found at the bottom of a storage tank of unknown composition. The material had a diameter of 8 mm, a length of 62 cm and a mass of 0.018 kg. What is the density of this material in g/mL? The volume of a cylinder is given by V = πr^2h.

One of the common intravenous fluids, called physiological saline, is a homogeneous mixture of NaCl in water. In this mixture, 0.89% of the mass is contributed by the NaCl. What mass of NaCl is found in 450. mL of physiological saline? ((Density of physiological saline = 1.005 g/cm3)

Automobile batteries are filled with an aqueous solu­ tion of sulfuric acid. What is the mass of the acid (in grams) in 500. mL of the battery acid solution if the density of the solution is 1.285 g/cm^3 and the solution is 38.08% sulfuric acid by mass?

Which piece of equipment would you use to measure 7.10 mL of CuSO4 (aq)?

It is recommended that drinking water contain 1.6ppm fluoride (F-) for the prevention of tooth decay. Consider a reservoir with a diameter of 4.50 x 102 m and a depth of 10.0 m. (The volume is πr2h, where r is the radius and h is the height.) How many grams of F- should be added to give 1.6ppm? How many grams of sodium fluoride, NaF, contains this much fluoride?

A manufacturer of paint claims that a gallon (3.78L) of latex paint can cover 365 ft2 of the surface of a wall in a single coating. The paint manufacturer also claims that one single coating of an entire wall will be 3.40 mm thick.   Is this a case of false advertising? Yes or No? Elaborate your answer by providing a calculation.   You may use the following conversions: 12 in = 1 ft, 2.54 = 1 in

The population density of worms in a particular field is 34 worms per cubic meter of soil. How many worms would there be in the top meter of soil in a field that has dimensions of 1.00 km by 2.5 km?

What mass (in kg) of saltwater would fill an olympic-size swimming pool that is 50.0 meters length, 25 meters in width, and 2.00 meeters deep?