Naturally occuring boron is 80.20% boron-11 (atomic mass 11.01 amu) and 19.80% of some other isotope. What must the atomic mass
of this second isotope be in order to account for the 10.81 amu average atomic mass of boron?.
1 answer:
You will have to do some math.
<span>80.2 × 11.01 + 19.8 × x = 100 * 10.81. </span>
<span>x is the mass in amu of the second isotope. </span>
<span>Solve for x. </span>
<span>19.8 × x = 100 * 10.81 - 80.2 × 11.01 </span>
<span>19.8 × x = 1081 - 883.00 = 198.00 </span>
<span>x = 1964.00 / 19.8 = 10.00 </span>
<span>The mass of the other isotope is 10.00 amu.</span>
You might be interested in
Answer:
All the members of a group of elements have the same number of valence electrons and similar chemical properties.
Explanation:
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior.
Answer:
<h2>6 m/s</h2>
Explanation:
The speed of the man can be found by using the formula
d is the distance
t is the time taken
From the question we have
We have the final answer as
<h3>6 m/s</h3>
Hope this helps you
The density is one gram per mL, so 1.
Answer:
water,salt are the house hold items
Answer:
Resolution is the ability to distinguish two objects from each other. Light microscopy has limits to both its resolution and its magnification.
