How much dose is represented by 300 ergs absorbed by 3 grams of tissue?

To determine the dose delivered in rads, it is important to understand the relationship between energy absorbed (measured in ergs), mass of the tissue (in grams), and the dose (in rads). The dose in rads is defined as the amount of energy absorbed by one gram of tissue when exposed to ionizing radiation. Specifically, 1 rad is equivalent to 100 ergs absorbed by 1 gram of tissue.

In this scenario, we have 300 ergs absorbed by 3 grams of tissue. To calculate the dose in rads, first, we need to find out how many ergs are absorbed per gram of tissue:

1. Divide the total ergs by the mass in grams:

300 ergs / 3 grams = 100 ergs per gram.

2. To convert ergs per gram to rads, recall that 1 rad = 100 ergs per gram. Thus, we can convert the energy absorbed:

100 ergs per gram / 100 ergs per rad = 1 rad.

Therefore, the dose represented by 300 ergs absorbed by 3 grams of tissue is 1 rad, confirming that this choice is the correct answer. This demonstrates the importance of