There are 4 hydrogen atoms for every carbon atom in methane (natural gas). How many hydrogen atoms are needed to combine with 50 carbon atoms?Answer: ___________

What is the most common chronic lung disease of premature infants?

a. BPD b. Asthma c. Cystic fibrosis d. TTN

Approximate the corresponding saturation for a PaO2 of 80 mm Hg under normal acid-base con-ditions by using the oxyhemoglobin dissociation curve in the figure

a. 80% c. 90% b. 85% d. 95%