25 cations and anions each with their IUPAC name

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?