Wednesday
July 30, 2014

Homework Help: Chemistry

Posted by Peter on Saturday, September 8, 2012 at 1:41pm.

Naturally occurring boron is 80.20% boron-11 (of atomic mass 11.01 amu) and 19.80% of some other isotope form of boron. What must be the atomic mass of this second isotope in order to account for the 10.81 amu average atomic mass of boron?

A. 10.99 amu
B. 11.00 amu
C. None of these
D. 11.01 amu
E. 11.99 amu
F. 12.00 amu
G. 10.00 amu
H. 9.00 amu

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chemistry - Naturally occuring boron is 80.20% boron-11 and 19.80% of some other...
Chemistry - Boron has only two naturally occurring isotopes. The mass of boron-...
CHEMISTRY (PLEASE HELP) - 1.What would happen to poisonous chlorine gas if ...
Chemistry - The element boron has three naturally occuring isotopes. One has the...
Chemistry - Which of the following elements (C, B, Be, Li for both parts of the ...
chemistry - Naturally occuring boron is composed of only two isoptopes 10/5B and...
Chemistry - Bromine has two naturally occurring isotopes. Bromine-79 has a mass ...
Maths-Help - A silicon ingot, which should contain 10^16 boron atoms/cm3, is to ...
Chemistry - Element L has an average atomic mass of 54.2488 amu and is composed ...
Chemistry H. - Indium has two naturally occurring isotopes and an atomic mass of...

Search
Members