In chemistry the formula of pH is: pH= -log[H+] where H+ is the concentration of the hydrogen ions. A mixture of acetic acid has a pH of 3.4. Find the concentration of hydrogen ions in the mixture.
What will be an ideal response?
0.0004
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Calculate the BSA of a woman who is 161 cm tall and weighs 70 kg.
A. 3.13 m2 B. 1.90 m2 C. 3.60 m2 D. 1.77 m2
Solve the problem.A surveyor standing 69 meters from the base of a building measures the angle to the top of the building and finds it to be 37°. The surveyor then measures the angle to the top of the radio tower on the building and finds that it is 50°. How tall is the radio tower? Round to the nearest hundredth when necessary.
A. 10.75 meters B. 11.33 meters C. 30.24 meters D. 15.93 meters
Solve the problem.If the police have 8 suspects, how many different sets of 5 suspects can they select for a lineup?
A. 6720 B. 40 C. 56 D. 336
Evaluate the expression using the properties of real numbers.183 + 73 + (-183)
A. 256 B. 0 C. 110 D. 73