Scores on the individual ASVAB subtests are reported as Standard Scores. Standard Scores are scores that have a meaning relative to a national sample of youth aged 18 to 23.About half the population scores at or above a Standard Score of 50 and about 16% of the population scores at or above a Standard Score of 60.Examinees also receive a score on what is called the Armed Forces Qualification Test (AFQT).AFQT scores are computed using the Standard Scores from four ASVAB subtests: Arithmetic Reasoning (AR), Mathematics Knowledge (MK), Paragraph Comprehension (PC), and Word Knowledge (WK).xaminees also receive a score on what is called the Armed Forces Qualification Test (AFQT). AFQT scores are computed using the Standard Scores from four ASVAB subtests: Arithmetic Reasoning (AR), Mathematics Knowledge (MK), Paragraph Comprehension (PC), and Word Knowledge (WK).
Adding more solute to a solution will increase its concentration. Adding more solvent will only dilute it. Think of salt water. The salt is the solute, and water is the solven â¦ t. Add salt and it becomes a more concentrated solution.Add more water, and it is more dilute. Simple and easy once you think it through.dding more solvent will only dilute it. Think of salt water. The salt is the solute, and water is the solven â¦ t. Add salt and it becomes a more concentrated solution. Add more water, and it is more dilute. Simple and easy once you think it through.
Prepare the Phosphate Buffer. Decide on the concentration of the buffer. Most buffers are used at a concentration between 0.1 M and 10 M. If you make up a concentrated buffer solution, you can dilute it as needed. Decide on the pH for your buffer. This pH should be within one pH unit from the pKa of the acid/conjugate base. So, you can prepare a buffer at pH 2 or pH 7, for example, but pH 9 would be pushing it. Use the Henderson-Hasselbach equation to calculate how much acid and base you need. You can simplify the calculation if you make 1 liter of buffer. Select the pKa value that is closest to the pH of your buffer.