Organic chemistry question! Please HElP!!!!?

Question

1. Some cooking oils contain both saturated and unsaturated fats. The amount of unsaturated fat is determined by the iodine number of the fat mixture. Saturated fat has a iodine number of 0 – 2. Unsaturated fats may have iodine numbers of 50 – 100. What property of unsaturated fats allows for a high iodine number?

2. Soap is the sodium salt of a fatty acid. Millions of bars of soap are produced every year in the USA. Where do soap manufacturers obtain fats for the manufacture of soap?

Answer 1

1. The C=C double bonds in fatty acid molecules.

2. Plants and animals