- How many degrees does the hour hand of a clock turn in 5 minutes?

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NH3 is a weak base (Kb = 1.8 × 10–5) so the salt NH4Cl acts as weak acid. What is the pH of a solution that is 0.043 M in NH4Cl at 25 °C? Can anyone help me on #14 on this Chemistry review question? If not that's fine.? How many 0 are there in 5,231 million? How do I prove this identity using vectors? How do I prove the following (vectors)?