Which one of steno's principles allows for the determination of the relative age of
different rock layers in the grand canyon?

principle of superposition
principle of original horizontality
principle of lateral continuity
principle of original verticality

Classify this reaction: 2al+n2-> aln.

One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.

Is this correct if not can u correct me