Chapter 13
1. (p.413 prob.15) An ordinary glass is filled to the brim with 350.0mL of water at 100°C. If the temperature decreased to 20°C, how much water could be added to the glass?
2. (p.414 prob.30) Typical temperatures in the interior of the Earth and Sun are about 4000°C and 15 x 106°C, respectively. (a) What are these temperatures in kelvin? (b) What percent error is made in each case if a person forgets to change °C to K?
3. (p.414 prob.32) Calculate the density of oxygen at STP using the ideal gas law.
4. (p.414 prob.35) If 25.50mol of helium gas is at 10°C and a gauge pressure of 0.350atm, calculate (a) the volume of the helium gas under these conditions, and (b) the temperature if the gas is compressed to precisely half the volume at a gauge pressure of 1.00atm.
5. (p.414 prob.44) Estimate the number of (a) moles, and (b) molecules of water in all the Earth's oceans. Assume water covers 75 percent of the Earth to an average depth of 3km.
6. (p.415 prob.53) Show that for a mixture of two gases at the same temperature, the ratio of the rms speeds of their molecules is equal to the inverse ratio of the square roots of their molecular masses.