Question

If you have a graduated cylinder, containing 15.5 ml, and this volume changes 95.2 mL after a metal with a mass of 7.95g is dropped into the graduated cylinder then what is the density of this metal? Bromine is the only nonmetal that is a liquid at room temperature. Consider the isotope bromine-81. Select the combination which lists the correct atomic member, neutron number, and mass number, respectively. A) 35, 46, 81 B) 35, 81, 46 C) 81, 46, 35 D) 46, 81, 35 E) 35, 81, 116 What is the mass percent of oxygen in barium perchlorate? A) 4.7% B) 8.5 % C) 23.4 % D) 38% E) 18.7

Answer 1