MCAT Physics Question — pH
A NaOH solution has an OH– concentration of 1×10-5M. What is the pH of the solution? A. 2 B. 5 C. 9 D. 12 Click for Explanation Two relationships are necessary for this solution: pOH = -log[OH–] and pOH +…
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MCAT Physics Question – Ions
Ions X, Y, and Z are initially held fixed in the orientation shown below: Which of the following vectors corresponds to the direction ion Z will move immediately after it is released from its fixed position? Click for Explanation Ion…
MCAT Chemistry Question – Combustion of Octane
The combustion of octane is a common reaction in automobile engines. 1) 2 C8H18 (l) + 25 O2 (g) → 16 CO2 (g) + 18 H2O (g) ΔH1 = -250 kJ/mole 2) 18 H2O (l) → 18 H2O (g) ΔH2 = 88…