PH3(g) 1/4 P4(g) + 3/2 H2(g) is first order in PH3. The initial concentration of PH3 was 0.0542 M, the concentration of PH3 dropped to 0.00851 M after 68.0 s passed. Based on this experiment, the rate constant for the reaction is __s^-1?

The density would be 1.622

Answer:

a. energy is absorbed in the reaction.

explanation:

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.

Order of filling levels and sublevels of electrons: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²3f¹⁴5d¹⁰6p⁶for an element with 5 electrons in the 3d energy level: full configuration: 1s²2s²2p⁶3s²3p³.

The answer is false because: gravitational force is independent of medium and depends only on the masses of the two objects and the distance between them