Final answer:
The total mass of all of Donna's first aid kits is 48 kilograms.
Step-by-step explanation:
To find the total mass of all of Donna's first aid kits, we need to multiply the mass of each kit by the number of kits she has.
Each kit weighs 8 kilograms, and she has 6 kits.
So we can calculate the total mass by multiplying 8 by 6:
Total mass = 8 kg/kit * 6 kits
= 48 kg
Therefore, the total mass of all of Donna's first aid kits is 48 kilograms.