What is the percent composition by mass of nitrogen in the compound N H4 (gram-formula mass = 32 g/mol)? 1.
13%
44%
3.
88%
4.
93%

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.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)