Octane (C8H18) is a component of gasoline that burns according to the following equation: C8H18(l) + O2(g) → 8CO2(g) + 9H2O(g) ΔH∘rxn = −5074.1 kJ What mass of octane (in g) is required to produce 8210 kJ of heat?
Express your answer to three significant figures.

Gwhich r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? which r group would most likely be found in a hydrophobic area of the tertiary structure of a globular protein? −ch2−oh −ch2−o||c−nh2 −ch2−coo− −ch2−ch2−ch2−ch2−n+h3

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury

Which statement are accurate about snow flakes