I need a complete answers for all the 13 final review questions please asSiae lo

Question

I need a complete answers for all the 13 final review questions please

asSiae loride PART 1 The following 12 questions are True/False. Each is worth 1 point. (actual directions on the final exam) 1. KCl is not a molecule True Kel is n oui compod is mae ofa melel O; and O, are isotopes of oxygen. F 3. 2. 58.5 g of NaCl is dissolved in enough water to make 500 mL of solution. 2 moles of NaCl are present in the final solution. 4. The following reaction will occur: CuBr 5. Sulfur got oxidized in the following redox reaction: PbS + 411202 PbSO4 + 4H2O 6. The van't Hoff factor, i, in iKbm for CHOH is 6 7. The following reaction is exothermic and heat is absorbed. H2 + Br2 2HBr 11 =-72 kJ 8. An endothermic reaction has a +H and feels cool. 9. A balloon which is 2 Liters at 20°C is 1 Liter at 10°C. 10. There are 8 electrons in the 1st energy level of an atom. 11. Magnesium has no unpaired electrons. 12. Se is larger than Br. 13. The bond angles in BH3 are 120

Explanation / Answer

Ans 1 : True

KCl is an ionic compound , made up of potassium and chloride ions.

Ans 2 : False

Isotopes have the same atomic number but different atomic mass.

Ans 3 : False

58.5 g = 1 mole of NaCl

Ans 4 : True

Because Sn lies below Cu in electrochemica series , so Sn will replace Cu from its solution.

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