Using the equation PH = -log (H+), a solution with a (H+)= 10+ M has a PH of which of the following?

A. 9

B. 5

C. 1

D. 10

Answer Explanation:

Concentration of H+ in the solution = 10 −1 M

pH= -log(10 −1)

pH= -(-1)

Therefore, the Correct Answer is C.

Q #1: Which of the following is classified as a noninfectious disease?

A. Psoriasis

B. Brucellosis

C. Olkunginys

D. Dengue

Answer Explanation

Psoriasis is a chronic skin condition that causes red, scaly patches on the skin. It is not contagious, and it is not caused by any microorganism. It is believed to be an autoimmune disorder where the immune system attacks healthy skin cells.
Q #2: Which of the following molecules contains the fewest covalent bonds?

A. Chlorine molecule

B. Ammonia molecule

C. Methane molecule

D. Water molecule

Answer Explanation

A chlorine molecule contains the fewest covalent bonds among the options provided. It consists of two chlorine atoms bonded together by a single covalent bond. Compared with the other options, ammonia has three covalent bonds, methane has 4 while water has 2.
Q #3: Which of the following describes one difference between skeletal muscles and cardiac muscles?

A. Skeletal muscles are found in the viscera whereas cardiac muscles are found in the cranium

B. Cardiac muscles contain intercalated discs, whereas skeletal muscles do not

C. Cardiac muscles are voluntary, whereas skeletal muscles are involuntary

D. Skeletal muscles are autorhythmic, whereas cardiac muscles are not

Answer Explanation

Cardiac muscles have intercalated discs that enable them to contract in a coordinated manner. Skeletal muscles do not have intercalated discs, as their contraction is under voluntary control and does not require the same level of synchronization seen in the involuntary contraction of cardiac muscle.

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Using the equation PH = -log (H+), a solution with a (H+)= 10+ M has a PH of which of the following?

More Questions on TEAS 7 Science

Q #1: Which of the following is classified as a noninfectious disease?

Answer Explanation

Q #2: Which of the following molecules contains the fewest covalent bonds?

Answer Explanation

Q #3: Which of the following describes one difference between skeletal muscles and cardiac muscles?

Answer Explanation

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