Answer:
The percent recovery from re crystallization for both compounds A and B is 69.745 and 81.44 % respectively.
Explanation:
Mass of compound A in a mixture = 119 mg
Mass of compound A after re-crystallization = 83 mg
Percent recovery from re-crystallization :
Percent recovery of compound A:
Mass of compound B in a mixture = 97 mg
Mass of compound B after re-crystallization = 79 mg
Percent recovery of compound B:
<span>In this case we can see from the given that the
Sodium (Na) becomes a positive ion. When an atom becomes positive, therefore it
means that it lose an electron. Therefore sodium loses one electron and becomes
an ion with a positive charge (cation). This is written as: Na-----> Na+ + e</span>
Need the answers to answer.
Answer:
The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance (the decimal associated with percent of atoms of that element that are of a given isotopе). An element does not have an absolute atomic mass.
<em>Hope</em><em> this</em><em> </em><em>helps</em><em> </em><em>:</em><em>)</em>
Sound is the movement. Hope this helped. Have a great day! :D