Find the enthalpy of the following reaction at 25 °C using average bond enthalpies. H2 (g) + I2 (g) → 2 HI (g)

Average bond enthalpies (kJ/mol): E(H–H)=436, E(I–I)=151, E(H–I)=298

Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Which material burns faster? metal aluminum