A scientist has developed a new type of material that is supposed to float on water . This material has a mass of 2.0g for every 3.0 cm^3 of volume. Will this material float on water ( density =1.0g/cm^3)? Explain.

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

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