Balance the equation below by placing the correct coefficients in the blanks. Your response should list the coefficients in order from left to right, separated only by commas; no spaces. If no coefficient belongs in a blank, represent it with a “1”. For example the equation 2 H2O →  2 H2+O2 would be represented as 2,2,1.    ____H2(SO4) +____Cr   →    ____H2  +  ____Cr2(SO4)3  

On a separate sheet of paper, draw the Lewis dot structure for SO2. After completing the exam, upload your picture in the Unit 2 Exam pictures dropbox. 

Which of the following compounds would be classified as molecular? KCl Cl2O  CaCl2 NaCl

Which of the following compounds would be classified as molecular? N2O3 Na3O Mg3N2 FeN

Balance the equation below by placing the correct coefficients in the blanks. Your response should list the coefficients in order from left to right, separated only by commas; no spaces. If no coefficient belongs in a blank, represent it with a “1”. For example the equation 2 H2O  → 2 H2 +O2 would be represented as 2,2,1.  ____H3(PO4)  +  ____ Rb(OH)   →  ____Rb3 (PO4) + ____H2O  

Which of the following compounds would be classified as molecular? N2O3 Na3O Mg3N2 FeN

The correct formula of an ionic compound containing Fe+2 and (OH)-1 is

Balance the equation below by placing the correct coefficients in the blanks. Your response should list the coefficients in order from left to right, separated only by commas; no spaces. If no coefficient belongs in a blank, represent it with a “1”. For example the equation 2 H2O  → 2 H2 +O2 would be represented as 2,2,1.  ____H3(PO4)  +  ____ Rb(OH)   →  ____Rb3 (PO4) + ____H2O  

Which of the following choices best classifies the following reaction: 2 Al  +  6 HCl → 2 AlCl3  +   3 H2 a. combination b. single replacement c. decomposition d. double replacement 

Which of the following statement(s) is true? a. evaporation only occurs at the surface of a liquid b. the boiling point of a liquid is dependent upon the atmospheric pressure c. evaporation is a cooling process d. increasing the amount of heat supplied to a boiling liquid will increase its temperature e. increasing the surface are of a liquid will increase evaporation