The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. A swimming polar bear climbs onto a piece of floating ice that has a volume of 6.22 m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?