The U.S. has vast reserves of natural gas that are commercially viable as a result of advances in horizontal drilling and hydraulic fracturing technologies enabling greater access to gas in shale formations.
Yes, you can open the Keflex capsule and take the contents. However, that way you may miss some of the dose if all the contents of what you mixed it in don't get eaten. And the taste of the antibiotic powder may not be so nice.
Answer. You can open the capsules and mix them with some food as long as you can be sure that your daughter will take the entire dose. My only concern is that you will not be able to mask the taste of the cephalexin and it will be difficult to get her to take the medicine mixture.