How many liters of hydrogen gas at STP are produced from 3.5 grams of sodium? Assume 100% y 2Na+2H 2 O 2NaOH+H 2

2b2t

explanation:

2b2t

i do not get it   at all

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.