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FUNDAMENTALS OF ENVIRONMENTAL CHEMISTRY A (CM121_1010) April 22, 2010 11:41 This test covers chemical formulae for ionic compounds and balancing...

What is the chemical formula of the compound formed between the ions Mg2+ and PO43-?
FUNDAMENTALS OF ENVIRONMENTAL CHEMISTRY A (CM121_1010) April 22, 2010 11:09:41 This test covers chemical formulae for ionic compounds and balancing chemical equations. Before attempting this test you should complete the Practice Problems in the lecture notes and check your answers against those in Blackboard, Course Documents, Theory, Robyn's topics (or something like that) then Change and Solutions to Practice Problems. It is recommended that you write these onto a piece of paper then answer the questions. The time allowed for this is 1.5 hrs. It will allow you to submit the test after this but will ask me to approve marking it. Question 1 (1 mark) What is the chemical formula of the compound formed between the ions Na + and O 2- ? A ONa B O 2 Na C Na 2 O D ONa 2 E NaO 2 F NaO Question 2 (1 mark) What is the chemical formula of the compound formed between the ions Mg 2+ and PO 4 3- ? A Mg 3 (PO 4 ) 2 B PO 4 Mg C (PO 4 ) 2 Mg 3 D (PO 4 ) 2 Mg 3 E MgPO 4
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F Mg 2 (PO 4 ) 3 Question 3 (1 mark) What is the chemical formula of the compound formed between the ions NH 4 + and SO 4 2- ? A NH 4 SO 4 B SO 4 (NH 4 ) 2 C (NH 4 ) 2 SO 4 D SO 4 NH 4 E NH 4 2 SO 4 F (SO 4 ) 2 NH 4 Question 4 (1 mark) Write and balance the following chemical equation. Then complete the questions about the the balanced equation. When Mg reacts with O 2 the product is MgO Please enter the numbers as the numeric characters 1, 2 or 3 etc. instead of words. 1. How many Mg are required in the balanced equation? 2. How many O 2 are required in the balanced equation? 3. How many MgO are produced in the balanced equation? Question 5 (1 mark) Write and balance the following chemical equation. Then complete the questions about the the balanced equation. When C 4 H 10 O and O 2 react they form CO 2 and H 2 O Please enter the numbers as the numeric characters 1, 2 or 3 etc. instead of words. 1. How many C 4 H 10 O are required in the balanced equation? 2. How many O 2 are required in the balanced equation? 3. How many CO 2 are produced in the balanced equation? 4. How many H 2 O are produced in the balanced equation? Question 6 (1 mark) Write and balance the following chemical equation. Then complete the questions about the the balanced equation. When HCl reacts with Al(OH) 3 to produce H 2 O and AlCl 3
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This question was asked on Apr 21, 2010.

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