Probably - all the plants in this plant family (Crassulaceae) have dust-like seeds. Other memebrs of this plant family include Jade Plant, Echeveria, Sempervivum and Sedum.

Yes, those are the seeds. They can be put directly into any seedling or potting mix. Keep them warm and moist and you should get a ton of seedlings. You can sift them out of the flower fras, but they seem to do ok with some of it still left in the mix. A trick my teacher tought me with such small seeds is to mix them with a little pearlite or vermiculite and then sprinkle the mixture on top of the soil so you get a somewhat even dispersion.