Chapter 1, Problem 1.43E

The volume of a certain bacterial cell is 2.22 μ m3. Give your answers in scientific notation. (a) What is its volume in cubic millimeters (mm3)?

Express the following numbers as decimals:(a) 1.52 × 10−2 , (b) 7.78 × 10−8 , (c) 1 × 10−6, (d) 1.6001 × 103.

If the concentration of mercury in the water of a polluted lake is 0.350  μg (micrograms) per liter of water, what is the total mass of mercury in the lake, in kilograms, if the lake has a surface area of 15.0  square miles and an average depth of 35.0  feet?

We use the density of water to calculate the mass of water from its volume. The density of water at 25°C is 0.998 g/mL.  If a calorimeter was filled with 104.6 mL of water, what is the mass of water in grams?

Classify each change as physical or chemical. (a) the rusting of iron(b) the evaporation of fingernail-polish remover (acetone) from the skin(c) the burning of coal(d) the fading of a carpet upon repeated exposure to sunlight

The mass of an iron nail is measured before and after being placed in a beaker of water for 2 days. It is found that 0.059 g of iron (3) oxide (rust) was produced over the 2-day period. What mass of iron in the nail reacted with the water? Assume the nail is pure iron

A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. 0.050 mol kg = ? mol g 口。 x10 X μ 0|0 G

8. Carry out the following conversions: (a) 1.42 lightyears to miles (a light-year is an astronomical measure of distance—the distance traveled by light in a year, or 365 days; the speed of light is 3.00x108 m/s), (b) 32.4 yd to centimeters, (c) 3.0 3x1010 cm/s to ft/s. With solution

The density of air is 1.29 grams/L. What is the weight, in kilograms, of a cubic meter (1.00m^3) of air?