You can't determine the number of shots in a liter of Hennessy without knowing the size of the shots. Here's why:

* Shot Size Varies: A "shot" can be different sizes depending on the bar or country. Common sizes are:

* 1.5 ounces (44 ml)

* 1 ounce (30 ml)

* 2 ounces (60 ml)

* Hennessy's Proof: Hennessy is a cognac, meaning it is a type of brandy. Its proof can vary, which affects the alcohol content.

To calculate the shots, you'd need this information:

1. The size of a shot you're using

2. The proof (alcohol content) of the Hennessy bottle

Here's an example:

Let's say you're using a 1.5 ounce shot and the Hennessy is 80 proof (40% alcohol by volume):

1. Convert liters to ounces: 1 liter = 33.8 ounces

2. Divide total ounces by shot size: 33.8 ounces / 1.5 ounces/shot = 22.5 shots

Keep in mind, this is just an estimate. Always drink responsibly!