This compound is named potassium chloride. Example 5: Write the name of the following formula: Na2S. First symbol is Na, so the first part of the name is sodium. (Note the presence of the subscript does not play a role in this name.) Second element is sulfur (from the symbol S), so the name is sulf + ide = sulfide. This compound is named sodium sulfide.
The viviparous sharks who carry the eggs until the pups are born, have different gestation periods. The dogfish shark is known to keep their eggs for 18 to 24 months. The bull shark gestation is about one year. The hammerhead shark gestation period is from 7 to 12 months. Other species that are ovoviviparous carry the eggs until the pups born alive and fully developed. They also have long gestation periods. The tiger shark gestation is about 14 to 16 months.
Whelping. The average canine gestation period is approximately 63 days, with most canines giving birth between day 58 and 68 of pregnancy. Observe your Labrador carefully for signs of impending labor as her due date approaches.Typical indicators are a sudden refusal of solid food and restless or anti-social behavior.helping. The average canine gestation period is approximately 63 days, with most canines giving birth between day 58 and 68 of pregnancy. Observe your Labrador carefully for signs of impending labor as her due date approaches.