Uranium has 3 naturally occurring isotopes; 238U, 235U, and 234U. Roughly 99.2745% of uranium is U-238...
- Uranium has 3 naturally occurring isotopes; 238U, 235U, and 234U. Roughly 99.2745% of uranium is U-238 and 0.7200% is U-235. What is the average mass of an U atom? You may assume that the mass of each isotope is equal to its mass number. Report your answer to 6 sig figs.
- How many protons, neutrons, and electrons does 235U have?
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Uranium has 3 naturally occurring isotopes; 238U,
235U, and 234U. Roughly 99.2745% of uranium
is U-238...
Natural uranium is a mixture of 238U (99.3%, monisotopic mass = 238.05 amu) and 235U (0.7%,...
Natural uranium is a mixture of 238U (99.3%, monisotopic mass = 238.05 amu) and 235U (0.7%, monisotopic mass = 235.04 amu). The 235U isotope is essential to nuclear reactors. We isolate this isotope by converting a sample that contains both forms of uranium to UF6. What is the molecular mass of the UF6 compound if only 238U is used? What is the molecular mass of the UF6 compound if only 235U is used? What would the (rate of 235U)/(rate of...
A mass spectrometer is used to separate the uranium isotopes 235U and 238U. Part B: In...
A mass spectrometer is used to separate the uranium isotopes 235U and 238U. Part B: In this spectrometer, singly ionized uranium ions pass first through a 130 m/s velocity selector, and then into a 2.85 T magnetic field. Find the diameter of the arc traced out by the 235U isotope. Part C:Find the diameter of the arc traced out by the 238U isotope
1 (6)Uranium has three naturally occurring isotopes 22U, 235s2U, and 3 2U. The isotope Uranium-235is considered to be "weapons grade uranium" and can be used to make atomic weapons. The f...
1 (6)Uranium has three naturally occurring isotopes 22U, 235s2U, and 3 2U. The isotope Uranium-235is considered to be "weapons grade uranium" and can be used to make atomic weapons. The fractional abundances for two of the uranium isotopes are uranium-238-99.274% and Uranium-234-0.005%. The molecular mass of natural uranium is 237.9758amu. What is the fractional abundance of weapons grade uranium using these numbers (note: the number on the periodic table takes into account isotopes that aren't natural so use the numbers...
2. An element has 2 naturally occurring isotopes with the following masses and abundances A. Calculate...
2. An element has 2 naturally occurring isotopes with the following masses and abundances A. Calculate the atomic weight of the element. (20 pts) Isotope mass Percentage 34.97 amu 75.78% 36.97 amu 24.22% B. What is the element? C. How many neutrons does the heavier isotope have? (Round to whole number) D. How many electrons does the element have? E. What type(metal/nonmetal) of element is it? F. If the element above gains 1 electron what neutral element has the some...
Most naturally occurring Gallium is Gallium-69. How many protons, neutrons and electrons does an atom of...
Most naturally occurring Gallium is Gallium-69. How many protons, neutrons and electrons does an atom of Gallium-69 have? What is the isotope notation for Gallium-69? 10
Question 11 How many electrons are present in 40ca2+? 40 20 Question 12 Consider 235U. How...
Question 11 How many electrons are present in 40ca2+? 40 20 Question 12 Consider 235U. How many neutrons are present in this nuclide? 92 177 143 235 Question 13 The atomic mass of an atom is the number of ___in that particular atom. o neutrons protons protons plus neutrons o electrons Question 14 The ratio of isotopes for a given element can be measured instrumentally using a isotopometer mass spectrometer oratiometer spectrophotometer
4. The element boron has two naturally occurring isotopes. One has atomic mass 10.0129 u, while...
4. The element boron has two naturally occurring isotopes. One has atomic mass 10.0129 u, while the other has atomic mass 11.0093 u. The average atomic mass of boron is 10.811 u. Determine the percentage occurrence of each isotope.
half life U-235 is 7.04x10^8 years half life U-238 is 4.468 x10^9 years 3. One may assume that when U-238 was formed...
half life U-235 is 7.04x10^8 years
half life U-238 is 4.468 x10^9 years
3. One may assume that when U-238 was formed at the genesis of Earth, an equal amount of 235U was formed. Today the amount of 238U is 138 times the amount of 235U. How long a time ago did the genesis occur according to this assumption?
Gallium has two naturally occurring isotopes. One of them, gallium-69, has a mass of 68.925581 u...
Gallium has two naturally occurring isotopes. One of them, gallium-69, has a mass of 68.925581 u and a percent isotopic abundance of 60.11%. What must be the mass and percent isotopic abundance of the other isotope, gallium-71?
The element carbon has two naturally occurring isotopes. The isotopic masses and abundances of these isotopes...
The element carbon has two naturally occurring isotopes. The isotopic masses and abundances of these isotopes are shown in the table below. Isotope 12c isotopic mass (amu) Abundance (%) 12.00 13.00 98.93 1.07 Calculate the average atomic mass of carbon to two digits after the decimal point. Number = _______ amu
1 (6)Uranium has three naturally occurring isotopes 22U, 235s2U, and 3 2U. The isotope Uranium-235is considered to be "weapons grade uranium" and can be used to make atomic weapons. The fractional abundances for two of the uranium isotopes are uranium-238-99.274% and Uranium-234-0.005%. The molecular mass of natural uranium is 237.9758amu. What is the fractional abundance of weapons grade uranium using these numbers (note: the number on the periodic table takes into account isotopes that aren't natural so use the numbers...
2. An element has 2 naturally occurring isotopes with the following masses and abundances A. Calculate the atomic weight of the element. (20 pts) Isotope mass Percentage 34.97 amu 75.78% 36.97 amu 24.22% B. What is the element? C. How many neutrons does the heavier isotope have? (Round to whole number) D. How many electrons does the element have? E. What type(metal/nonmetal) of element is it? F. If the element above gains 1 electron what neutral element has the some...
Most naturally occurring Gallium is Gallium-69. How many protons, neutrons and electrons does an atom of Gallium-69 have? What is the isotope notation for Gallium-69? 10
Question 11 How many electrons are present in 40ca2+? 40 20 Question 12 Consider 235U. How many neutrons are present in this nuclide? 92 177 143 235 Question 13 The atomic mass of an atom is the number of ___in that particular atom. o neutrons protons protons plus neutrons o electrons Question 14 The ratio of isotopes for a given element can be measured instrumentally using a isotopometer mass spectrometer oratiometer spectrophotometer
4. The element boron has two naturally occurring isotopes. One has atomic mass 10.0129 u, while the other has atomic mass 11.0093 u. The average atomic mass of boron is 10.811 u. Determine the percentage occurrence of each isotope.
half life U-235 is 7.04x10^8 years
half life U-238 is 4.468 x10^9 years
3. One may assume that when U-238 was formed at the genesis of Earth, an equal amount of 235U was formed. Today the amount of 238U is 138 times the amount of 235U. How long a time ago did the genesis occur according to this assumption?
The element carbon has two naturally occurring isotopes. The isotopic masses and abundances of these isotopes are shown in the table below. Isotope 12c isotopic mass (amu) Abundance (%) 12.00 13.00 98.93 1.07 Calculate the average atomic mass of carbon to two digits after the decimal point. Number = _______ amu
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