We need to make 100 mL of a 4% KCl solution by diluting a 5% solution of potassium chloride. How many milliliters of the 5% KCl solution are needed?
What will be an ideal response?
You might also like to view...
Which one of the following statements about humoral immune responses is true?
A. Naive B cells are required for initiation of primary responses and memory B cells are required for initiation of secondary responses. B. Antibody responses to bacterial polysaccharide antigens require CD4+ helper T cells. C. Heavy chain isotype switching typically occurs in response to bacterial polysaccharide antigens. D. Affinity maturation does not require helper T cells. E. Antibody-secreting cells generated during a humoral immune response live for only a few hours.
The combining form that means menses is ________.
Fill in the blank(s) with the appropriate word(s).
The pediatrician has prescribed an antibiotic suspension for three-year-old Lianne. Lianne is excited that the antibiotic is bright pink and tastes like sweet bubble gum. What should her parents tell her?
A) They should express their excitement along with her. B) They should praise her for taking her medication like a big girl. C) They should not say anything to her, but ask for another medication that doesn't take as good. D) They should explain that it is taken for her health and only as directed by a physician.
The climate change tipping point, a theoretical point of no return to previous conditions, is currently set at 450 ppm of
A. atmospheric carbon dioxide. B. the greenhouse effect. C. a temperature inversion. D. a deposition.