The element sodium, na, has an atomic number of 11 and an atomic mass of 23.0 atomic mass units (amu). which of these elements is most likely to have similar reactivity as sodium?

If soap hits the floor, is the soap dirty or the floor

What is the approximate mass of 25 cm3 of silver, if the density is 10.5 g/cm3? a. 0.42 g b. 2.4 g c. 42 g d. 260 g

Quickly what are the following of organisms that existed over a wide area but only for a limited time period called a. soft fossils b. mold fossils c. index fossils d. trace fossils