franrojascameron1314 franrojascameron1314

01-11-2022
Chemistry

Answered

Element Z consists of 3 isotopes,
Z-28 with a mass of 27.977 amu
Z-29 with a mass of 28.976 amu
Z-30, whose atomic masses is 29.974 amu.
The most abundant isotope is Z-28 which accounts for 92.23% of the atoms.
Given that the observed atomic mass of element Z is 28.0855 amu; calculate the percentages of Z-29 and Z-30 in nature.

Answer :

Other Questions

14.Write the nuclear symbol for the following isotope. d. mass number of 130 and 53 electrons.

periodic table with atomic symbols, atomic number, atomic weights of individual elements; numbers on top and left margin indicate the group and period number 17

module 2 dba chemistry if you need some help with what questions are asked here is what i was asked from Mrs., Bernie flvs pick a element off a periodic table(

A sample of a compound made entirely from copper and oxygen was found to have a total mass of 0.1431g The mass of the copper In the compound was found to be 0.1

1. Calculate the mass of 5 molecule of water and 100 molecules of C12H22O11

Cmpd Element Element Charge Total and and valence Valence Valence N2H2

Based on the electron configuration of the two atoms, predict the ratio of sodium to bromine in the compound. 1s²2s²2p63s¹ Sodium Bromine A. 1:1 C. 1:2 1s²2s²2p

A student starts with 0.473 g of pure 4‑aminobenzoic acid, (molar mass 137.14 g/mol ) and ends up with 0.423 g of benzocaine (molar mass 165.19 g/mol ). Given t

I’m desperate need of help! When a 6.39 g sample of solid sodium hydroxide (molar mass 40.00 g/mol) dissolves in 100.0 g water in a coffee cup calorimeter, the

A student combusted magnesium ribbon in a crucible to produce magnesium oxide according to the reaction: Mg + O2 → MgO. Use the data below to calculate the mass