Beryllium, Magnesium, Calcium....etc have two valence electrons
<span>The superscripts in an electron configuration represents the number of electrons and protons in an element. </span>
<h3><u>Answer</u>;</h3>
≈ 4.95 g/L
<h3><u>Explanation;</u></h3>
The molar mass of KCl = 74.5 g/mole
Therefore; 0.140 moles will be equivalent to ;
= 0.140 moles × 74.5 g/mole
= 10.43 g
Concentration in g/L
= mass in g/volume in L
= 10.43/2.1
= 4.9667
<h3> <u> ≈ 4.95 g/L</u></h3>
Answer:
<h2>Organic chemistry is the chemistry of carbon based compounds while biochemistry is the study of directly biologically relevant chemistry..</h2><h2>pls mark as brainliest</h2>
