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Chemistry 120 Exam 2 Questions With Correct Answers

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2024/2025 Written for academic year
Institution Chamberlain College Of Nursing
Course CHEM 120
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Chemistry 120 Exam 2 QUESTIONS WITH CORRECT ANSWERS

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Chemistry 120: Exam 2 QUESTIONS /\ /\ /\ /\ /\




WITH CORRECT ANSWERS /\ /\




Solution= - CORRECT ANSWERS ✔✔Solute + Solvent /\ /\ /\ /\ /\ /\




Express the amount of solute present in a given amount of solvent
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\



as.. - CORRECT ANSWERS ✔✔concentration
/\ /\ /\ /\




A common concentration unit is.. - CORRECT ANSWERS
/\ /\ /\ /\ /\ /\ /\ /\



✔✔Molarity (M) /\




Molarity= - CORRECT ANSWERS ✔✔Moles of solute/ Liter of
/\ /\ /\ /\ /\ /\ /\ /\ /\



solution


175 g MgCl2 (Molar mass= 95.31 g/mol) are dissolved in 850.0 mL
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\



H2O. /\




A.) What is the molarity of the MgCl2?
/\ /\ /\ /\ /\ /\ /\




B.) What is the molarity of the Cl- ion? - CORRECT ANSWERS ✔✔
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\




Dilution: - CORRECT ANSWERS ✔✔sometimes solutions must be
/\ /\ /\ /\ /\ /\ /\ /\



diluted in order to obtain a concentration which is useful in lab.
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\




What is the equation used for dilution? - CORRECT ANSWERS
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\



✔✔M1V1=M2V2

, 25.0 mL of 12.1 M HCL is diluted to 500.0 mL. Calculate the final
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\



M. /\




How many mL of a 15.9 M HNO3 solution are required to prepare
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\



2.00 L of a 6.00 M HNO3 solution? - CORRECT ANSWERS ✔✔
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\




A student has 50.0 mL of a 1.40 M CuSO4 solution. How much
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\



water must be aded in order to prepare a 0.200 M CuSO4
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\



solution? - CORRECT ANSWERS ✔✔ /\ /\ /\ /\




100.0 mL of 6.0 M HCL are added to 50.00 mL of 3.0 M HCl. What
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\



is the molarity of the resulting solution? - CORRECT ANSWERS ✔✔
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\




What is a chemical equation? - CORRECT ANSWERS ✔✔a
/\ /\ /\ /\ /\ /\ /\ /\ /\



shorthand expression for describing a chemical change. /\ /\ /\ /\ /\ /\




A chemical equation consists.. - CORRECT ANSWERS ✔✔of a list of
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\



the reactants involved, a reaction arrow " ->" indicating the
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\



direction of the reaction and a list of products formed. /\ /\ /\ /\ /\ /\ /\ /\ /\




P4 + O2 -> P2O5 - CORRECT ANSWERS ✔✔P4 + 5O2 -> 2P2O5
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\




CuCl2 + Al -> AlCl3 + Cu - CORRECT ANSWERS ✔✔3 CuCl2 + 2Al -
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\



> 2AlCl3 + 3 Cu
/\ /\ /\ /\




C4H10 +O2 -> CO2 + H2O - CORRECT ANSWERS ✔✔2C4H10 + 13
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\



O2 -> 8 CO2 + 10 H2O
/\ /\ /\ /\ /\ /\

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