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Referring only to a periodic table, give the ionic charge expected for the element Mg:

Which one of the following is a decomposition reaction?

What is the percent by mass of oxygen in As2O4? Use 213.84 amu for the formula mass of As2O4.

8. (9 pts) Evaluate the following. Please show work by writing out what the symbols mean using the definition and formulas to receive full credit.  a.

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4. (6 pts) Subtract 4712 – 638 using only the nines complement method. Using other methods will not receive any credit even if the answer is correct. 

9. (8 pts) Find the number of distinguishable arrangements of the letters of the word  MASSACHUSETTS

Governments have a unique role in labour relations because:

a) Explain the nature and importance of the phrase “duty to accommodate”. b) Explain how a union might be involved in or affected by the accommodation process.

Collective agreements always contain a grievance and arbitration procedure that provides for: