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.
Many significant changes occur in your growing fetus throughout the second trimester. Itâs also during this exciting phase that youâre able to learn your babyâs sex and morning sickness begins to fade. As your baby is growing, your body is rapidly changing. These changes may include digestive issues such as constipation, gas, and heartburn. Learn more about these common complaints and how to find relief so you can get back to enjoying your pregnancy.