An unknown element has two isotopes. Isotope #1 has an atomic mass of 84.91 amu (72.16%) and isotope #2 has an atomic mass of 86.91 amu (27.84%). (a) What is the average atomic mass? Isotope #1: Х Isotope #2: Х (b) What is the element? amu

There are 6.022 x 10^23 atoms of hg in 1 mole of hg. the number of atoms in 4.5 moles of hg can be found by multiplying 4.5 by 6.022 x 10^23 a. 2.7 x 10^24 b. 27 x 10^23 c. 2.71 x10^24 d. 27.099 x 10^23

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

How big are the bighest ocean waves at mavericks