Practice Question
How many times stronger is the hydrogen-ion concentration of a pH 4 solution as compared with a pH 9 solution?
Answer Choices:
Correct Answer:
100,000
Rationale:
🎯The pH scale is logarithmic, meaning each unit change represents a 10× difference in hydrogen-ion concentration.
- Difference between pH 9 and pH 4 = 5 units
- Therefore, hydrogen-ion concentration is:
♦105=100,000 times stronger
Want to practice more questions like this?
This question is from ATI TEAS 7~Science Practice Test which contains 8 questions.
More Questions from This Exam
The mitochondrial inner membrane carries out the same function in cellular respiration as the membrane of chloroplasts in photosynthesis. Which of the following correctly completes the sentence above?
Answer Choices:
A. thylakoid
B. nuclear
C. tonoplast
D. epithelial
An individual suffers severe blunt trauma to the thoracic cavity. Which of the following organs are at greatest risk from this injury?
Answer Choices:
A. Heart and lungs
B. Brain and spinal cord
C. Large and small intestines
D. Liver and stomach
Which of the following functions does the myelin sheath perform for a nerve cell?
Answer Choices:
A. Regeneration
B. Insulation
C. Sensory perception
D. Nutrition
Which of the following growth curves shows a population that is at it’s carrying capacity?
Answer Choices:
A. B
B. A
C. C
D. D
Which of the following terms describes the relaxation of the chambers of the heart during the cardiac cycle?
Answer Choices:
A. Bradycardia
B. Diastole
C. Systole
D. Tachycardia
Question Details
- Category: ATI TEAS
- Subcategory: Science Exam(s)
- Domain: Science~2024
- Answer Choices: 4