CHEM 120 Weekly Quiz 8 - Question Only.docx - 1 Question(TCO 5 Which of the following factors will increase the rate of a reaction 2 Question(TCO 5 What

CHEM 120 Weekly Quiz 8 - Question Only.docx - 1...

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1. Question : (TCO 5) Which of the following factors will increase the rate of a reaction? 2. Question : (TCO 5) What should be the coefficient of hydrogen, H2, in the following equation in order to make it balanced? 2 Al + 3 H2SO4 ---> Al2(SO4)3 + ? H2 3. Question : (TCO 5) Magnesium reacts with oxygen to form magnesium oxide and has the following balanced chemical equation: 2 Mg + O2 --> 2 MgO. How many mole(s) of oxygen gas (O2) are needed to react with 4.0 moles of Mg? 4. Question : (TCO 5) Determine the # of atoms for each element present in the following molecule: Al(NO3)2 (3 pts.). Using the periodic table of elements, determine the molar mass for this
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Unformatted text preview: molecule (7 pts.). 5. Question : (TCO 7) You are asked to calculate the concentration of a KCl (in water) solution in several ways and are given the following information: 3.5 g KCl, 50 mL solution, 50 g water, 1 mole KCl = 74.6 g KCl. (1) Calculate the mass/mass percent concentration (4 pts.). (2) Calculate the Molarity of the solution (6 pts.). 6. Question : (TCO 7) What volume (mL) of a 3.5% (m/v) KOH solution can be prepared by diluting 45.0 mL of a 15% (m/v) KOH solution?...
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  • Spring '14
  • Chem 120

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