WebCopper has two isotopes, 63 Cu (69.15%, mass=62.9300 amu) and 65 Cu (30.85%, mass = 64.928 amu), and so the respective mole fractions are 0.6915 and 0.3085, resulting in an … Webiridium has two isotopes. with mass numbers 191 and 193, and its average relative atomic mass is 192.23.calculate the relative abundances of the two isotopes; The relative molecular mass of A is 116. Determine the molecular formula for A. 2.4g of a compound of carbon, hydrogen and oxygen gave on combustion, 3.52g of CO2 and 1.44g of H2O.

A silicon -containing ore has 92% 28Si, 5% 29Si and 3% 30Si. Calculate …

Web7) Express 96,342 m using 2 significant figures. 9) Silicon, which makes up about 25% of Earth's crust by mass, is used widely in the modern electronics industry. It has three … WebThe average mass is the relative atomic mass, which can be easily calculated from the percentage composition ( % abundance). An element’s relative atomic mass, Ar, is … herne lodge tasmania

Solved Isotopes and Relative Atomic Mass (5 points total) - Chegg

WebOct 15, 2024 · 30Si has a relative atomic mass of 29.99288 and a natural abundance of 3.09%. Explanation: The atomic mass of silicon is given by: Si=Si²⁸×A₁+Si²⁹×A₂+Si³⁰×A₃ … WebJun 30, 2024 · The "average atomic mass", i.e. the mass quoted on the Periodic Table, is the WEIGHTED average of the individual isotopic masses. We KNOW that the average atomic mass is 28.1*"amu"...we DO NOT know the individual percentages of ""^28Si, ""^29Si, and ""^30Si. ... 29Si, 30SI the relative mass of silicon is 28.1 what could be the … WebQuestion: Silicon, which makes up about 25% of Earth's crust by mass, is used widely in the modern electronics industry. It has three naturally occurring isotopes, 28si, 29's, and 30si. Calculate the atomic mass of silicon. Isotope isotopic Mass (amu) Abudance % 28si 27.976927 92.22 28.976495 4,69 29.973770 3.09 si osi Select one a. 29.2252 amu … maximum height shipping pallet