a pack of blank recordable CD's has a mass of 0.8kg. The packaging has a mass of 80g. what is the mass of one CD?

Is it 17.6g

How many CD's are in the pack?

there are 50 cds in the pack. Sorry missed that information.

800 g - 80 g = 720 g

720/50 = ?

To find the mass of one CD, we need to subtract the mass of the packaging from the total mass of the pack.

Given:
Total mass of the pack: 0.8 kg
Mass of the packaging: 80 g

To calculate, we need to convert the mass of the packaging from grams to kilograms:
Mass of the packaging = 80 g = 80/1000 kg = 0.08 kg

Now, we can subtract the mass of the packaging from the total mass to find the mass of one CD:
Mass of one CD = Total mass of the pack - Mass of the packaging
Mass of one CD = 0.8 kg - 0.08 kg = 0.72 kg

Therefore, the mass of one CD is 0.72 kg, not 17.6 g.