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.
Taking almost any drug during pregnancy can have serious consequences for the fetus. For instance, babies who are exposed to cocaine have a tendency to have smaller heads that indicate a lower IQ. Cocaine-exposed babies have a higher risk of birth defects that impact the urinary tract or heart.