Using Hess's Law rearrange the fiven reactions to determine the heat of reaction for Fe2O3(s) + 3 CO(g) --> 2 Fe(s) + 3 CO2(g)

Explain waht needs to ve done to each reaction to determine the final reaction desired

reaction 1: 2 Fe(s) + 3/2 O2(g) --> Fe2O3(s) ^H = -824.2 KJ/mol

reaction 2: CO(g) + 1/2 O2(g) --> 2 CO2(g) ^H = -282.7 KJ

First reaction: ^ H becomes KJ/mol

second reaction ^H becomes KJ/mol

heat of reaction is KJ/mol

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign

How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.

What causes most sediment to wash or fall into a river