Which bones are shortened in brachycephalic dogs?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

What state of matter is ice a. liquid b. element c. solid d. gas

Choose all the answers that apply. fluorine (f) has an atomic number of 9 and an atomic weight of 18.99. fluorine has a. 9 protons b. 10 neutrons c. 18 electrons d. an atomic mass of 19 e. at least one isotope