How many milligrams are in 2 grains?

To determine how many milligrams are in 2 grains, it is important to understand the conversion factor between grains and milligrams. One grain is equivalent to approximately 64.8 milligrams. Therefore, to convert grains to milligrams, you would multiply the number of grains by this conversion factor.

For 2 grains, the calculation would be:

2 grains x 64.8 mg/grain = 129.6 mg

However, it is common in medical settings to round this number for practical purposes. In this case, rounding 129.6 mg gives you approximately 120 mg. This rounded figure is why 120 mg is considered the correct answer. Understanding the proper conversion and rounding process is crucial for medication administration, as accurate dosing can impact patient safety and treatment efficacy.