While excavating ancient remains, an archaeologist discovers a box of minted coins. The nineteen coins have identical markings and composition. The archaeologist performs some measurements and records the following data in her lab notebook: total mass of coins = 1.23 lbs melting point of material = 1981 °F coins dropped into graduated cylinder, water rises from 3.50 fl oz. to 5.62 fl oz. Later, the archaeologist compares her measurements to the data table shown below. Is it possible the coins are made of one of the metals listed in the table? If so, which one? Consider the information to the right of the table. Metal metal alloy #1 metal alloy #2 metal alloy #3 metal alloy #4 Density (g/cm3) 10.5 8.9 10.5 8.9 Melting Temp (°C) 1083 962 962 1083 (1 fluid oz. = 29.57 mL) (454 g = 1 lb)
Ideal and Real Gases
Ideal gases obey conditions of the general gas laws under all states of pressure and temperature. Ideal gases are also named perfect gases. The attributes of ideal gases are as follows,
Gas Laws
Gas laws describe the ways in which volume, temperature, pressure, and other conditions correlate when matter is in a gaseous state. The very first observations about the physical properties of gases was made by Robert Boyle in 1662. Later discoveries were made by Charles, Gay-Lussac, Avogadro, and others. Eventually, these observations were combined to produce the ideal gas law.
Gaseous State
It is well known that matter exists in different forms in our surroundings. There are five known states of matter, such as solids, gases, liquids, plasma and Bose-Einstein condensate. The last two are known newly in the recent days. Thus, the detailed forms of matter studied are solids, gases and liquids. The best example of a substance that is present in different states is water. It is solid ice, gaseous vapor or steam and liquid water depending on the temperature and pressure conditions. This is due to the difference in the intermolecular forces and distances. The occurrence of three different phases is due to the difference in the two major forces, the force which tends to tightly hold molecules i.e., forces of attraction and the disruptive forces obtained from the thermal energy of molecules.
While excavating ancient remains, an archaeologist discovers a box of minted coins. The nineteen coins have identical markings and composition. The archaeologist performs some measurements and records the following data in her lab notebook:
total mass of coins = 1.23 lbs melting point of material = 1981 °F coins dropped into graduated cylinder, water rises from 3.50 fl oz. to 5.62 fl oz.
Later, the archaeologist compares her measurements to the data table shown below. Is it possible the coins are made of one of the metals listed in the table? If so, which one?
Consider the information to the right of the table.
Metal metal alloy #1 metal alloy #2 metal alloy #3 metal alloy #4
Density (g/cm3) 10.5
8.9
10.5
8.9
Melting Temp (°C) 1083
962
962
1083
(1 fluid oz. = 29.57 mL) (454 g = 1 lb)
Given: Mass of coins = 1.23 lbs.
Melting point of coins = 1981 oF
And the change in volume of the water on dropping coins = 5.62 - 3.50 = 2.12 oz.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
