I'm not positive but I believe you are talking about where sperm comes from, correct?
Lithium has charge of +1 and bromide has charge of - 1. So they combine to form the compound lithium bromide which is expressed as LiBr.
<h3><u>Explanation:</u></h3>
Lithium is an alkali metal placed in group 1 or periodic table. It has a valency of 1 which is achieved as lithium loses an electron to achieve a charge of +1.
Bromine is a halogen which is placed in group 17 of periodic table. It has a valency of 1 which is achieved as bromine looses an election to achieve a charge of - 1.
Lithium is the cation and bromide is the anion. So lithium is written in front and bromine following the cation. And as both of their valencies are 1, so they form the compound LiBr.
Answer : 5.405 moles of
are equivalent to 97.3 grams of 
Solution : Given,
Mass of
= 97.3 g
Molar mass of
= 18 g/mole
Formula used :

or,

Now put all the given values in this formula, we get the moles of 

Therefore, 5.405 moles of
are equivalent to 97.3 grams of 
Answer:
Since moles are just "some number of particles", and since one O2 molecule contains enough oxygen for two H2O molecules, you need 2.5 moles of O2 for 5 moles of H2O.
Explanation:
The use of microorganism in our day to day life is making medicine.