Solve the problem.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the hydrogen ion concentration if the 
A. 0.1
B. 1010
C. 10-10
D. 2.3
Answer: C
Mathematics
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Find the sum of the geometric series.
A. 93 B. 480 C. 1452 D. 2460
Mathematics
Determine the order of the matrix.
A. 3 B. 2 × 3 C. 6 D. 3 × 2
Mathematics
Solve the equation.
= 
A. -1 B. 1 C. 2 D. -2
Mathematics
A satellite in a 100-mile-high circular orbit around Earth has a velocity of approximately 17,500 miles per hour. If this velocity is multiplied by , the satellite will have the minimum velocity necessary to escape Earth’s gravity and will follow a parabolic path with the center of Earth as the focus. (Hints: The radius of Earth is 4,000 miles.)
What will be an ideal response?
Mathematics