an unknown element x has the following isotopes: ²⁵x (80.50% abundant, mass = 25.03 amu) and ²⁷x (19.50% abundant, mass = 26.98 amu). what is the average atomic mass of x in amu?

Many colleges review students’ scores on the _ or _ before deciding whether to offer them admission.

All of these sentences include commonly confused homophones. which sentence is correct? you put too much sugar on your breakfast serial. my father grows vegetables and flours in his garden. will someone me untie the knot in my shoelace? when did the captain set sale on his trip to north america?

Keep your choice of a major there is probably no single correct choice. a ) to yourself. b) in perspective. c) based solely on the expectations of others. d) all of the answer choices are correct.