Apatient needs to take 625 mg of ibuprofen twice daily. the pills in the bottle are each 250. mg. how many pills does the patient need to take each time she wants the 625 mg dosage? assume that these pills are scored and can be cut in half if necessary.

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.