Q.Pecan trees
Can you raise a pecan tree from a pecan nut that had the shoot already coming out of the nut when I put it in a pot? And, the stem is about 10 inches high now but the leaves are very big wide and kind of tear drop shaped, not long and narrow like a mature pecan leaf? Am I actually growing a pecan tree or a weed in my pot?
There would certainly be no harm in trying!
Pot up the new seedling and see if it continues to grown.
Here are some articles with more information.
https://www.gardeningknowhow.com/edible/nut-trees/pecan/growing-pecan-trees.htm
https://www.ndsu.edu/pubweb/chiwonlee/plsc368/student/papers99/raylesworth/index.htm