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Chem 105 final UWEC Exam Questions and Answers $12.49   Add to cart

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Chem 105 final UWEC Exam Questions and Answers

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Chem 105 final UWEC Exam Questions and Answers Which of the following is a homogenous mixture? a). Distilled water b). Ammonia c). River water with suspended sand particles d). NaCl dissolved in water e). C6H6(l) - ANSWER-d). NaCl dissolved in water What kind of compound is HNO3? a). Molec...

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  • October 31, 2024
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Chem 105 final UWEC Exam Questions

and Answers


Which of the following is a homogenous mixture?




a). Distilled water


b). Ammonia


c). River water with suspended sand particles


d). NaCl dissolved in water


e). C6H6(l) - ANSWER✔✔-d). NaCl dissolved in water


What kind of compound is HNO3?




a). Molecular


b). Ionic


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c). Metallic


d). Element


e). Polyatomic ion - ANSWER✔✔-a). Molecular


What is the molar mass of CaCO3?




a). 68.09 g/mol


b). 100.09 g/mol


c). 92.11 g/mol


d). 124.11 g/mol


e). 200.2 g/mol - ANSWER✔✔-b). 100.09 g/mol


If Co2 has a MM of 44.01 g/mol, how many moles of CO2 are in 254g of CO2?




a). 0.173 moles


b). 5.77 moles




Page 2/39

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c). 11200 moles


d). 11.5 moles


e). 6.25 moles - ANSWER✔✔-b). 5.77 moles


How many atoms of Cl are in 43 moles of CaCl2?




a). 43


b). 86


c). 5.2 x 10^25


d). 2.6 x 10^25


e). 1.4 x 10^22 - ANSWER✔✔-c). 5.2 x 10^25


What is the correct name for AlCl3?




a). Aluminum (III) chloride


b). Aluminum chloride




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c). Aluminum trichloride


d). Monoaluminum trichloride - ANSWER✔✔-b). Aluminum chloride


How many significant figures are in the following number: 204.0 mL?




a). 2


b). 3


c). 4


d). 5


e). 0 - ANSWER✔✔-c). 4


Which of the following is diphosphorus pentoxide?




a). PO10


b). P2O6


c). P2O5




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