In order to grasp the concept of molar mass calculations it is important to understand the molar unit. The mole also called mol is the basic unit of measurement in chemistry. By definition, in modern chemistry, one mole represents the number of carbon atoms in exactly 12 grams of carbon 12 isotope.
Fetal development during the first trimester. The most dramatic changes and development for your baby occur during the first trimester. Itâs also during this time that the fetus is the most susceptible to damage from alcohol, drugs, certain medications, and illnesses.
Frequent urination is one of the most common early signs of pregnancy, beginning around six weeks into your first trimester. Though frequent urination is one of the irritating symptoms of pregnancy, it will not cause any harm to you or your fetus. In fact, it rids the body of toxins in the most efficient manner. As long as there are no other symptoms, frequent urination during pregnancy is completely normal.