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Constructed Response . Topic 5: Formulas and equations

Set A: Formula writing, IUPAC name

Base your answers to questions 1 and 2 on the information below.

A scientist in a chemistry laboratory determined the molecular formula
for two compounds containing nitrogen and oxygen to be NO2 and N2O5.

Write your answers here.

1. Write the IUPAC name for the compound NO2. 1.

2. Write the IUPAC name for the compound N2O5. 2.

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Set B: Formula writing, formula naming, chemical equation

Base your answers to questions 3 and 4 on the information and the equation below.
Antacids can be used to neutralize excess stomach acid.
Brand A antacids contains the acid-neutralizing agent magnesium
hydroxide, Mg(OH)2. It reacts with HCl(aq) in the stomach according
to the following balanced equation:
2 HCl(aq) + Mg(OH)2 (aq) -------- > MgCl2(aq) + 2 H2O(l)
Brand B antacids contains the acid-neutralizing agent sodium hydrogen carbonate.

3. Write the chemical formula for sodium hydrogen carbonate. 3.

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4. What type of reaction is shown in the above balanced equation. 4.

Set C: Formula writing and naming, number of atoms and ions, molecular and empirical formula

5. What is the chemical formula for manganese (II) sulfide? 5.

6. What is the correct formula for ammonium dichromate? 6.

7. What is the correct IUPAC name for the formula BeO ? 7.

8. Write the correct IUPAC name for the formula Au(NO3)3 8.

9. Write the correct IUPAC name for the formula Y2O? 9.

10. What is the total number of atoms in the formula NaNO3.4H20? 10.

11. What is the ratio of calcium ion to phosphate ion in the formula Ca3(PO4)2 . 11.

12. What is the ratio of ammonium ion to chlorate ion in the formula NH4ClO3? 12.

13. What is the correct empirical formula to the molecular formula C4H10O2 ? 13.
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