Chemistry help! 10 points if you help me?

State the law of conservation of m. Imagine a compound that could be synthesized in just 5 steps by a pharmaceutical company.Suppose they had 99% recovery of product at each step. If the company started the process with 10,000 grams of starting materials; how many grams of final product would they end up with? explain what possibly happens to the rest of the m as the substances proceed through the synthesis process.