Mass percent = % (m/m) = (grams of solute/grams of solution) x 100. Solution, not solvent so you need to add them. % (15 g / 15 g + 235 g) x 100 = 6.0% Na2CO3. An IV solution is prepared by dissolving 25 g glucose (C6H12O6) in water to make 500 mL solution.
âActivated B cells differentiate into either antibody generating factories called plasma cells that secrete soluble antibody, or into memory cells that survive in the body for years afterwards to allow the immune system to remember an antigen and respond faster upon future exposures.â ~ Wikipedia...
Erythrocytes, red blood cells, live 120 days. The life span of each type of tissue depends upon the work load endured by its cells. Cells lining the acid filled stomach last only about 5 days. The outer layer of skin is recycled about every two weeks.hen they die in about 12 hours. Eosinophils live about 3 weeks. Basophils last about 3-10 days. The life span of B lymphocytes that produce antibodies ranges from 4 days to 5 weeks.