6) Above calculation explains the reason. Since, highest % abundance is closure to 63, hence the atomic mass is 63.5 (closed to 63)
3. How many atoms in the original sample of Bn isotopes would be expected to have...
Copper has two naturally occurring isotopes, ^63 Cu (isotopic mass 62.9296 amu) and ^65 Cu (isotopic mass 64.9278 amu). If copper has an atomic mass of 63.546 amu, what is the percent abundance of each isotope? % ^63 Cu % ^66 Cu
Copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and a relative abundance of 69.17%. Use the atomic mass of copper to determine the mass of the other copper isotope. Express your answer using four significant figures.
The element copper exists in nature as two isotopes: 63 Cu has a mass of 62.9296 u and Cu has a mass of 64.9278 u. The average atomic mass of copper is 63.55 u. Calculate the relative abundance of the two copper isotopes. % 66 Cu
A is atomic mass number and Z is atomic number 5. Complete the table below -remember Net #of neutrons electrons charge #of symbol #of protons 238a2U 20 2+ 20 899Y 39 36 35 44 15 16 3- Show your work- LO 24Mg, 25Mg and 26Mg. 6. Calculate the elemental atomic mass of Mg if the naturally occurring isotopes Their masses and abundances are as follows: Isotope Atomic 24-Mg 25-Mg 26-Mg are Mass Isotopic 23.98504 amu Abundance 78.70% 24.98584 amu 10.13%...
Given the following isotopes for oxygen and their percent abundance calculate oxygen's average atomic mass. (Show Work) Isotope Abundance 160 99.76% 120 0.04% 0.2% 180
5. How many atoms of nitrogen are in 10 grams of NHINO? a)0.125 b) 2 17.53 x 10 d) 1.51 x 10 1 6.02 x 10 6. The average molar mass of Cu, which has two naturally cecurring isotopes is of the islopes has an atomic weight of 619 amu and makes up e9.1% of lhe custope. The other isotope has an abundance of 30.9% . The atomic weight (am) of the second istice is 63.5 amu. One a 63.2...
i) Asmall crystal has a mass of 7.03 mg The dimensions of the crystal are 3.80 mm x 2.95 mm x 1.70 mm. What is the density of the solid in g/cm"? LAB VII. PRACTICE PROBLEMS NAME: SECTION: PART B. CHAPTER 2 PROBLEMS 1) Isotopes a) Fill in the blanks to complete the table. Symbol Z A N of protons (p) N° of electrons (c) Nº neutrons (n) 10 AG 15 b) Copper has two naturally occurring isotopes: 69.17% of...
Both please !! ID: A An element has three naturally occurring isotopes. Information about each isotope is summarized below Isotope Isotope 1 Isotope 2 sotope 3 Mass(amu) 1 %Natural Abundance 4.946 5.983 53. (4 points) Find the average weighted atomic mass of this element. Observe the rals for significant ALL work MUST be show, including units, in order to receive PARTIAL credit 54, (4 points) Ferric chloride is 34.4% iron and 65.6% chlorine by mass. A chemist analyzes three compounds...
please complete the questions has not answering with clarification of the answer to any page Name Lab Section _Date The Mole Concept and Atomic Weights The purpose of this activity is to better understand the concepts of relative atomic mass, counting by weighing and the mole. Percent composition and average atomic mass are included. Part I. Relative Atomic Masses and the Mole - Early Method When John Dalton proposed his atomic theory, he stated that the atoms of each element...