An artery carries blood away from the heart, a vein carries blood to the heart.
Answer:
The elements in group 13 and group 15 form a cation with a -3 charge each.
Answer: The partial pressure of oxygen in the mixture is 321 mm Hg
Explanation:
According to Dalton's law, the total pressure is the sum of individual pressures.
Given : 
= total pressure of gases = 752 mm Hg
= partial pressure of Helium = 234 mm Hg
= partial pressure of nitrogen = 197 mm Hg
= partial pressure of oxygen = ?
Putting in the values we get:
The partial pressure of oxygen in the mixture is 321 mm Hg
Mitosis results in two identical daughter cells, whereas meiosis results in four cells.
