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When Silicon isotopes bombarded with neutron gives the following phosphorous isotopes by the emission of beta particle.
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Natural silicon consists of three stable isotopes: 28Si, 29si and 30si. Which of these isotopes becomes...
Silicon has 3 stable isotopes: 28Si (92.2%, 27.98 g/mol), 29Si (4.7%, 28.98 g/mol), and 30Si (3.1%,...
Silicon has 3 stable isotopes: 28Si (92.2%, 27.98 g/mol), 29Si (4.7%, 28.98 g/mol), and 30Si (3.1%, ???? g/mol). Calculate the isotopic mass of 30Si. Show your work.
What is the mass, in grams, of 9.41 • 10^24 Naturally occurring silicon consists of three...
What is the mass, in grams, of 9.41 • 10^24
Naturally occurring silicon consists of three isotopes with the following isotopic masses and abundances: Isotope Isotopic mass Abundance (%) 28si 27.9769265327 92.2297 29si 28.97649472 4.6832 30si 29.97377022 3.0872 Calculate the average atomic mass of naturally occurring silicon to at least four significant figures. Number a mu 200 How many photons are produced in a laser pulse of 0.720 J at 615 nm? photons: TOOLS x70
Calculate based on the relative abundance of the three main isotopes of silicon the average atomic...
Calculate based on the relative abundance of the three main isotopes of silicon the average atomic mass of Siand compare your results with value in table elements (28Si(92.2%), 29Si(4.7%), (30Si(3.1%))
Silicon, which makes up about 25% of Earth's crust by mass, is used widely in the...
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 Si, and 30Si. Calculate the atomic mass of silicon. Isotope 28Si 29Si 30Si Isotopic Mass (amu) 27.976927 28.976495 29.973770 Abudance % 92.22 4.69 3.09 0 27.9801 amu O 28.7260 amu O 28.9757 amu 28.0855 amu O 29.2252 amu
The element lanthanum has an atomic weight of 139 and consists of two stable isotopes lanthanum-138...
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...
I need 7 and 8 answered Thanks 7. There are three isotopes of silicon. They have mass numbers of 28, 29 and 30. The...
I need 7 and 8 answered Thanks
7. There are three isotopes of silicon. They have mass numbers of 28, 29 and 30. The average atomic mass of silicon is 28.086amu. What does this say about the relative abundances of the three isotopes? 8. Calculate the average atomic mass of bromine. One isotope of bromine has an atomic mass of 78.92amu and a relative abundance of 50.69%. The other major isotope of bromine has an atomic mass of 80.92amu and...
5. An element consists of two isotopes in the indicated natural abundances: Isotope A, mass=84.9118 amu,...
5. An element consists of two isotopes in the indicated natural abundances: Isotope A, mass=84.9118 amu, abundance = 72.15% Isotope B, mass = 86.9092 amu, abundance = 27.85% What is the atomic weight of this element? What is the identity of the element? Show your calculations.
Naturally occurring iron contains three stable isotopes, namely, 56Fe, 57Fe, and 58Fe, with isotope 56Fe, being...
Naturally occurring iron contains three stable isotopes, namely, 56Fe, 57Fe, and 58Fe, with isotope 56Fe, being the most abundant. Isotopes 54Fe and 59Fe are radioactive; the latter does not occur naturally. Propose the mode of decay for isotopes 54Fe and 59Fe, respectively, and write a decay equation for each isotope.
A certain element consists of two stable isotopes. The first has an atomic mass of 34.9689...
A certain element consists of two stable isotopes. The first has an atomic mass of 34.9689 amu and a percent natural abundance of 75.53 %. The second has an atomic mass of 36.9474 amu and a percent natural abundance of 24.47 %. What is the atomic weight of the element? amu
Model 1. A student taking a class will receive a grade based upon the following percentages:...
Model 1. A student taking a class will receive a grade based upon the following percentages: • test average 50% • homework average 20% • final exam grade 30% Her grades were: • 5 tests grades of 75, 65, 71, 52, and 87. Average = 70 • 8 homework grades of 90, 80, 10, 75, 92, 105, 90, and 100. Average = 80.3 • final examination grade of 79. Her final grade for the course was 75. 1. Using the...
What is the mass, in grams, of 9.41 • 10^24
Naturally occurring silicon consists of three isotopes with the following isotopic masses and abundances: Isotope Isotopic mass Abundance (%) 28si 27.9769265327 92.2297 29si 28.97649472 4.6832 30si 29.97377022 3.0872 Calculate the average atomic mass of naturally occurring silicon to at least four significant figures. Number a mu 200 How many photons are produced in a laser pulse of 0.720 J at 615 nm? photons: TOOLS x70
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 Si, and 30Si. Calculate the atomic mass of silicon. Isotope 28Si 29Si 30Si Isotopic Mass (amu) 27.976927 28.976495 29.973770 Abudance % 92.22 4.69 3.09 0 27.9801 amu O 28.7260 amu O 28.9757 amu 28.0855 amu O 29.2252 amu
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...
I need 7 and 8 answered Thanks
7. There are three isotopes of silicon. They have mass numbers of 28, 29 and 30. The average atomic mass of silicon is 28.086amu. What does this say about the relative abundances of the three isotopes? 8. Calculate the average atomic mass of bromine. One isotope of bromine has an atomic mass of 78.92amu and a relative abundance of 50.69%. The other major isotope of bromine has an atomic mass of 80.92amu and...
5. An element consists of two isotopes in the indicated natural abundances: Isotope A, mass=84.9118 amu, abundance = 72.15% Isotope B, mass = 86.9092 amu, abundance = 27.85% What is the atomic weight of this element? What is the identity of the element? Show your calculations.
A certain element consists of two stable isotopes. The first has an atomic mass of 34.9689 amu and a percent natural abundance of 75.53 %. The second has an atomic mass of 36.9474 amu and a percent natural abundance of 24.47 %. What is the atomic weight of the element? amu
Model 1. A student taking a class will receive a grade based upon the following percentages: • test average 50% • homework average 20% • final exam grade 30% Her grades were: • 5 tests grades of 75, 65, 71, 52, and 87. Average = 70 • 8 homework grades of 90, 80, 10, 75, 92, 105, 90, and 100. Average = 80.3 • final examination grade of 79. Her final grade for the course was 75. 1. Using the...
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