answer

watching

views

11 Dec 2019

Two isotopes of element X, ³⁹X and ⁴²X, comprise 93.26% and 6.73% of all the stable isotopes of X respectively. What would the atomic weight of element X be on the periodic table if these are the only two stable isotopes for the element?

answer

watching

173

views

For unlimited access to Homework Help, a Homework+ subscription is required.

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

Patrina SchowalterLv2

13 Dec 2019

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

Join us on Discord

Chemistry Study Group

Join now

Related questions

14) Element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. What is the average atomic mass of the element in amu?

38X abundance os 5.07 and mass of 39.919

39x abundance of 15.35 and mass of 39.017

42x abundance of 79.85 and mass of 42.111

15. Classify each of the following elements as alkali, alkaline earth, halogen or a noble gas:
a) He ________________________
b) F ________________________
c) Na ________________________
d) Ca ________________________
e) Br

The recommended adult dose of Elixophyllin , a drug used to treat asthma, is 6.00 mg/kg of body mass. Calculate the dose in milligrams for a 134-lb person

13. It is 273 K outside. Do you need a jacket? Why or why not? (show your work for full credit

The element Boron has two stable isotopes: boron-10(10.0129 amu) and boron-11 (11.0093 amu). The periodic table reports a mass for boron as 10.811. What is the natural abundance of each boron isotope?

1).A new element has been discovered on a foreign planet. Itseems to have 2 stable isotopes. Ezium-98 is 66.66% abundant. Whatis the mass of the other isotope if the atomic mass is 99.33 amu?Write it in isotopic notation.

2).Magnesium has 3 stable isotopes. ²⁴Mg,²⁵Mg, and ²⁶Mg. ²⁵Mg is 10.0%abundant. What are the abundances of the other 2 isotopes? Makesure to label which isotope is which answer.

Weekly leaderboard

Home

Homework Help 3,900,000

Chemistry 830,000

Two isotopes of element X, ³⁹X and ⁴²X, comprise 93.26% and 6.73% of all the stable isotopes of X respectively. What would the atomic weight of element X be on the periodic table if these are the only two stable isotopes for the element?

Unlock all answers

Related textbook solutions

Basic Chemistry

Principles of Chemistry Molecular Approach

Chemistry: Structure and Properties

Principles of Chemistry Molecular Approach

Chemistry: A Molecular Approach

Chemistry: A Molecular Approach

Principles of Chemistry: A Molecular Approach

Chemistry: The Central Science

Related questions

Weekly leaderboard

Two isotopes of element X, 39X and 42X, comprise 93.26% and 6.73% of all the stable isotopes of X respectively. What would the atomic weight of element X be on the periodic table if these are the only two stable isotopes for the element?

Unlock all answers

Related textbook solutions

Basic Chemistry

Principles of Chemistry Molecular Approach

Chemistry: Structure and Properties

Principles of Chemistry Molecular Approach

Chemistry: A Molecular Approach

Chemistry: A Molecular Approach

Principles of Chemistry: A Molecular Approach

Chemistry: The Central Science

Related questions

Weekly leaderboard

Two isotopes of element X, ³⁹X and ⁴²X, comprise 93.26% and 6.73% of all the stable isotopes of X respectively. What would the atomic weight of element X be on the periodic table if these are the only two stable isotopes for the element?