How much heat (kJ) is evolved when 4.90 g of Fe2O3 is reacted with excess carbon monoxide using the equation below?
Fe2O3(s) + 3CO(g) + 2 Fe(s) + 3 CO2(g) AH°rxn = - 24.8 kJ/mol

Imagine that you own a property that is exactly 2.2 acres large. you want to sell your property, but your realtor tells you that you cannot sell your land by the acre. in order to sell your land you need to determine the area you own in units of square meters? given that there are 1.6 kilometers in 1 mile and 640 acres in 1 square mile, what is the area of land that you own in square meters square meters?

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as