PLEASE HELP! You need to calculate the enthalpy change (H^0) of the reaction AB-->C How can the enthalples given for the reaction steps below be combined to
give the overall change in enthaly
280
CHAD

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Which would freeze at a higher temperature: the great salt lake or lake tahoe? a. lake tahoe would freeze at a higher temperature. b. the great salt lake would freeze at a higher temperature. c. both lakes would freeze at the same temperature.