Question

How much heat (in kilojoules) is evolved or absorbed in the reaction of 2.65 g of Na with H2O?

2Na+2H2O ---> 2NaOH + 2H2 Delta H= -368.4
Is that 368.4 J/mole of reactant or 368.4 J/reaction shown? It makes a difference? Also, you have no units on 368.4; I assume that is joules.
How many moles Na do you have?
2.65 g/atomic mass Na = moles Na.
If 368.4 J heat is released for the reaction as shown, then set up a proportion.
12
The chinese

Related Questions

How much heat, in kilojoules, is evolved when a 3.70 kg sample of molten Cu freezes? The normal boi... How much heat (in kilojoules) is evolved or absorbed in the reaction of 2.90g of Fe2O3 with enough... How much heat (in kilojoules) is evolved or absorbed in the reaction of 3.35 of with enough carbon m... Determine how much heat (in kilojoules) is evolved or absorbed in the reaction of 1.05 g of Na with...