CHEM-C100 CHAPTER 4 QUIZ

What is the correct formula for the ionic compound calcium chloride?

CaCl2

Calculate how many grams of carbon must react to produce 0.250 g of iron according to the reaction Fe2O3(s) + 3 C(s) 2 Fe(l) + 3 CO(g).

0.0807 g.

What is the mass of 1 mol of C6H12O6?

180.2 g.

Which of the following chemical reactions has carbon dioxide as a product? A. 4(g) + 3 O2(g) CO2(g) + 2 H2O(g). B. s) + CO2(g) CaCO3(s). C. 2(g) + H2(g) CO(g) + H2O(g).

A. 4(g) + 3 O2(g) CO2(g) + 2 H2O(g).

Which of the following chemical equations is correctly balanced? A. As2O3(s) + 3 C(s) 2 As(s) + 3 CO(g). B. As2O3(s) + 3 C(s) As(s) + 3 CO(g). C. As2O3(s) + 6 C(s) 2 As(s) + 6 CO(g).

A. As2O3(s) + 3 C(s) 2 As(s) + 3 CO(g).

Which of the following molecules is phosphorus pentachloride? A. PCl5. B. P5Cl. C. PCl4.

A. PCl5.

Which of the following is a covalent compound? A. AlCl3. B. CO2. C. MgCl2.

B. CO2

Which of the following elements is not diatomic? A. Nitrogen. B. Neon. C. Hydrogen.

B. Neon.

Which of the following reactions is incorrectly labeled? A. aq) + Fe(s) FeCl2(aq) + H2(g) - Redox reaction. B. aq) + NaOH(aq) NaCl(aq) + H2O(l) - Precipitation reaction. C. 4(g) + 3 O2(g) CO2(g) + 2 H2O(l) - Combustion reaction

B. aq) + NaOH(aq) NaCl(aq) + H2O(l) - Precipitation reaction.

Which of the following regions of the periodic table tends to prefer a 1 charge and occupies Group 17?

Halogens