The first order reaction 3A→2B+C has rate constant 0.538 s−1. If the initial concentration of A is 0.867 mol L−1, what is the half-life of the reaction, in seconds? Remember to use correct significant figures in your answer.

Work done = force ×distancebut force = mass ×gravityand gravity = 10m\s force = 2×10 = 20 work done = 20×3 = 60 joules

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.

Ithink is a because if say increased in electronegativity