How many insulin syringes will the nurse need to administer 100 units of standard u-100 insulin?

50 insulin syringes.

Explanation:

Injection of insulin is done under the skin in the fat by using different methods which are discussed below:

Insulin is injected under the fatty tissues called sub-Q tissues.

Syringes comes in different ranges:

According to the question  we have 100 unit of u-100 insulin which means the nurse will give 50 insulin syringes.