I WONDER - How Heavy Was The Diplodocus?

The Diplodocus was a massive dinosaur with a small head and brain. It evolved a long neck to reach and eat leaves from tall trees, which was essential for sustaining its large size. Its narrow, peg-like teeth were adapted for stripping leaves, allowing it to consume hundreds of pounds of vegetation daily.

How many vertebrae made up the neck of Diplodocus?

What type of teeth did Diplodocus have, and what were they suited for?