Explain Le Châtelier’s Principle.   (2 marks)

A Brönsted -Lowry base is defined as a(an):

A 0.2 M solution of formic acid has a pH of 5.0.  What is its Ka value?

In which of the following reactions does HNO3 act as a base?

Consider the following table: What is the molecular shape of the following molecules?   (1 mark each) a)    H2S                                   b)    SF6                                   c)    BaF2                                 d)    PH5                                              

In an endothermic reaction:

What precipitate, if any, could be formed if sodium chloride is mixed with silver sulphate?

A home care plan specifies only the types of care provided.

Health education was the earliest form of organized health promotion.

List the three 02 supply methods used in alternative settings. Which supply method is limited to 5-10 L/min? List an advantage and disadvantage of each 02 supply systems in the alternative setting.