Using incorrect concentrations. If your vitamin C standard solution is too concentrated or your iodine titration solution is too diluted, or your starch indicator solution is not between 0.5 to 1.0%, it may require much more than 50 mL of iodine solution to titrate the standard solution and/or orange juice.
The following summarizes some common causes of fatigue but is not meant to be comprehensive: Metabolic/endocrine: anemia; hypothyroidism; diabetes; electrolyte abnormalities; kidney disease; liver disease; Cushing's disease.
Hyperparathyroidism can cause fatigue and weakness, increased thirst, impaired thinking, and bone fractures. Insulin reaction (hypoglycemia) An insulin reaction is the result of low blood sugar and causes anxiety, hunger, shaking, dizziness, and more. Heat exhaustion Heat exhaustion causes intense thirst, heavy sweating, pale, cool, and moist skin, muscle cramps, and more.