Test tubes 8
Chlorine
Hydrogen
Sodium chloride solution
Graphite electrodes
Stop clock
8.00
dc power supply
Explain why graphite conducts electricity.
Answer in terms of the structure and bonding in graphite.
The student investigated how the volume of gases produced changes with time in the
electrolysis of sodium chloride solution. *
(2 points)

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

The fact that the total amount of energy in a system remains constant is a(n)