Answered: A hypothetical element has two main… | bartleby

Related questions

Question

A hypothetical element has two main iso-
topes.
other has a mass of 75 amu. If the atomic
as
One has a mass of 73 amu and the
weight of this element is 73.80 amu, what is
the percent abundance of the 75 amu isotope?
1. 45.92%
E
2. 39.92%
S
3. 60.08%
4. 54.08%
5. 42.92%.0
Na OF
6. 57.08%

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

Q3: The table shows two isotopes of potassium and two isotopes of calcium. Type of emission Mass of neutral atom / u Number of electrons Number of protons Number of neutrons Total mass/u Mass defect/ u Binding energy / J Mass of the electron = 0.000549 u Mass of the proton = 1.007276 u Mass of the neutron = 1.008665 u TI ***** LEG 39K Stable 38.96371 SE nda 42K ß decay a) Use data about potassium-42 to explain the concept of mass defect. 3000 41.9624 19 19 23 42.34797 0.38557 5.76 x 10-11 De RAP 39 Ca ßt decay 38.9707 440 **** ****** D 42 Ca stable 41.95863
4. I have two isotopes A and A' of an element with half-lives T/2 and Ti2 respectively. (a) Show that with time, the amount of A' relative to A is NA (t) f (t) = NA (t) = f (0) exp In (2) ( (b) The half-lives of 238U and 235U are 4.5 billion years and 700 million years, respectively. Natural uranium is currently about 97.3% 238U and 0.7% 235U. Based on the formula in (a), how long ago would you have been able to build an atomic bomb out of natural uranium ore, given that "weapons grade" uranium is at least 80% 235U? [MY]
A picture supposedly painted by Vermeer (1632-1675) contains 99.5% of its carbon-14 (half-life of 5730 years). 1. Is this enough information to determine if the picture is a fake? 2. What is the strategy for attacking the problem?
The gold nucleus has a mass of 3.27 × 10–25 kg. What is the density of the nucleus (in g cm–3)? 2.7 × 1014 3.5 × 1014 1.4 × 1014
90 6. Because of its chemical similarity to calcium, Sr can collect in the bones and present a health risk. What percentage 90 90 of Sr present initially still exists after 47.5 y?(The half life of Sr is 28.8 years) 38 % 60 so £60 3 ssf60 sk f60 ssf
The half-life of a radioactive isotope is 6.02 hours. 25.0 Grams of this isotope is needed for an experiment. How many grams of the isotope must be ordered if 48 hours pass between the time the isotope is ordered and the start of the experiment?
What is the half-life of Ra-226?
A periodic table might list the average atomic mass of magnesium as being 24.312 u, which is the result of weighting the atomic masses of the magnesium isotopes according to their natural abundances on Earth.The three isotopes and their masses are 24Mg (23.985 04 u), 25Mg (24.985 84 u), and 26Mg (25.982 59 u). The natural abundance of 24Mg is 78.99% by mass (that is, 78.99% of the mass of a naturally occurring sample of magnesium is due to the presence of 24Mg).What is the abundance of (a) 25Mg and (b) 26Mg?
One mole of carbon-12 has a mass of 12.00 grams. What is the mass of a 12C atom? Multiple Choice O 1.244 x 10-26 kg 2.032 × 10-26 kg 3.000 x 10-26 kg 2.440 x 10-26 kg 1.993 * 10-26 kg