Coal gasification can be represented by the equation: 2 C(s) + 2 H2O(g) ĻCH4(g) + CO2(g) ǼH = ? Use the following information to find ǼH for the reaction above. CO(g) + H2(g) ĻC(s) + H2O(g) ǼH = -131 kJ CO (g) + H2O(g) ĻCO2(g) + H2(g) ǼH = -41 kJ CO(g) + 3 H2(g) ĻCH4(g) + H2O(g) ǼH = -206 kJ

Which characteristic of water it form droplets? a. low specific heat b. nonpolar structure c. high surface tension d. ability to dissolve substances

Draw metallic bonding if two copper

The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas behavior at ordinary temperatures (t= 300k ). assume that deviatons would be noticeable when volume of the gas per molecule equals the volume of the molecule itself.