Can you identify any relationship between the
abundance of an element and its atomic weight? Are there any obvious exceptions to this
relationship?
Average atomic is sum of of an element is the sum of the atomic masses of their isotopes multillied by their natural abundance (abundance is given in percentage so take it by dividing 100)
If an element has two isotopes and their masses are M1 and M2 respectively. And their natural abundance are X1 and X2 ,then
Average atomic mass = M1X1 + M2X2
Average atomic mass will be in between mass of their isotopes.
Can you identify any relationship between the abundance of an element and its atomic weight? Are...
Calculate the atomic weight of element carbon (C), and element uranium (U). The isotope abundance: 12C, 98.90%; 13C (13.00335 amu), 1.10%; 238U (238.05078 amu), 99.28%; 235U (235.04392 amu), 0.72%, assuming 14C and 234U are negligible.
identify the group name, element name, element symbol, atomic number, atomic weight and electron configuration for each element Elements 0- Br Focus English (United States) 23
The element lanthanum has an atomic weight of 139 and consists of two stable isotopes lanthanum-138 and lanthanum- 139. The isotope lanthanum-138 has a mass of 138 amu and a percent natural abundance of 8.90X10-2 %. The isotope lanthanum-139 has a percent natural abundance of 99.9%. What is the mass of lanthanum-1392 A certain element consists of two stable isotopes. The first has a mass of 113 amu and a percent natural abundance of 4.28 %. The second has a...
The hypothetical element Q has an atomic weight of 124.8 AMU in the periodic table and only has two stable isotopes. Q isotope 1 has an abundance of 55.83 % and an isotopic mass of 122.16 AMU. What is the mass of Q isotope in AMU ? Round 3 decimal places.
Identify the relationship, can you explain as well please Identify the relationship between the two molecules below. CH3 H H3C/ HO Η ΝΗ, насHCH, Нон NH2 A. Diastereomers B. Constitutional isomers C. Enantiomers D. Same molecule E. Same molecule & meso
1) Cite the difference between atomic mass and atomic weight. 2) Without consulting any figures or tables, determine whether each of the electron configurations given below is an inert gas, a halogen, an alkali metal, an alkaline earth metal, or a transition metal. Justify your choices. (a) 1s22s22p63523p63d7452 (d) 1s22s22p6352 (b) 1s22s22p63s23p6 (e) 1s22s22p63s23p63d2452 (C) 1s22s22p5 (1) 1s22s22p63523p6451 3) (a) What type(s) of bonding would be expected for each of the following materials; brass (a copper- zinc alloy), rubber, barium...
A recent study by the World Bank wished to determine whether there was a relationship between the abundance of natural resources in a country and its long term rate of economic growth. Their study used 40 (n) countries over a long period to 1995. Letting Y be the rate of growth measured as a percentage and X be a measure of natural resource abundance, the following relationship between the two variables was estimated. Standard errors of b0 and b1 are...
Do not refer to the text when taking this test. An element has an atomic number of 11 and an atomic weight of 23. Its number of neutrons is a. 11. b. 12. c. 23. d. 24. The atom of an clement has 1 proton and 2 neutrons. Its atomic number is a. 1. b. 2. c. 3. d. 6. The atom of an element has 6 protons and 8 neutrons. The number of electrons in this atom is a....
1. Identify the atomic number, first ionization energy, electronegativity, and the atomic radius of barium, chlorine, and nitrogen. What can you observe about the trends of these properties? 2. Copper is typically used in electrical work. What type of material is it? What properties allow it to perform well? Why is sulfur not used in electrical wires? 3. Explain the connection between allotropes and the types of element.
Come up with an example of a bivariate correlation. It can be the relationship between any 2 numeric variables. Using your example, explain the directionality problem. Come up with a third variable that could likely explain the changes in both of your variables (i.e. identify the potential third-variable problem). Using your example, explain why you can’t determine causality in your (hypothetical) study.