1. The Ka of ranitidine (HY) is 5.8 x 10-8. The intestine has a pH of 6.8. What percentage of the ranitidine is ionized (Y-)

How hot is the suns corona? (integrated science)

Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12

Which statement justifies that hydrogen peroxide (h2o2) is a polar molecule? the o – h bond is nonpolar and the molecule is asymmetric. the o – h bond is nonpolar and the molecule is symmetric. the o – h bond is polar and the molecule is asymmetric. the o – h bond is polar and the molecule is symmetric.