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July 31, 2019
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Chem 132: A sample of an unknown metal (density = 4.920 g/mL) weighs 550.0 g. What is the volume of this piece of metal?

  Question: A sample of an unknown metal (density = 4.920 g/mL) weighs 550.0 g. What is the volume of this piece of metal? Select one: a. 111.8 mL b. 1.118 × 105 mL c. 8.945 × 10-3 mL d. 2.706 × 103 mL e. none of these     Answer a. 111.8 mL   Want to get help with […]

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Chem 132: Which of the following ions does not have a -1 charge?

  Question: Which of the following ions does not have a -1 charge? Select one: a. acetate b. nitrate c. nitrite d. hydroxide e. ammonium     Answer e. ammonium   Want to get help with all your chem 132 tasks? Post your Question Now, It’s free to post, cheap for you, and easy to hire. .  

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Chem 132: What type of a reaction is this: CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

  Question: What type of a reaction is this: CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) Select one: a. combustion b. single replacement c. decomposition d. synthesis e. two of these   Answer a. Combustion   Want to get help with all your chem 132 tasks? Post your Question Now, It’s free to post, cheap for you, and easy to hire. […]

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Chem 132: How many of the following are pure substances? (Check all that apply.)

  Question: How many of the following are pure substances? (Check all that apply.) Select one or more: a. carbon b. gold c. brass d. air e. water f. ammonia   Answer e. Water   Want to get help with all your chem 132 tasks? Post your Question Now, It’s free to post, cheap for you, and easy to hire. .  

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Chem 132: Classify the following reaction: 2Mg(s) + O2(g) → 2MgO(s)

  Question: Classify the following reaction: 2Mg(s) + O2(g) → 2MgO(s) Select one: a. synthesis b. two of the above c. oxidation-reduction d. decomposition e. combustion     Answer a. Synthesis   Want to get help with all your chem 132 tasks? Post your Question Now, It’s free to post, cheap for you, and easy to hire. .  

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Chem 132: The atom with 68 neutrons and 50 protons has a mass number of

  Question: The atom with 68 neutrons and 50 protons has a mass number of Select one: a. 50 b. 118 c. cannot be determined from information given d. 68 e. 18   Answer b. 118   Want to get help with all your chem 132 tasks? Post your Question Now, It’s free to post, cheap for you, and easy to […]

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Chem 132: 672.7 K equals

  Question: 672.7 K equals Select one: a. 945.7°C b. 1210.9°C c. 399.7°C d. 945.7°F e. 399.7°F     Answer e. 399.7 c   Want to get help with all your chem 132 tasks? Post your Question Now, It’s free to post, cheap for you, and easy to hire. .  

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Chem 132: In a chloride ion determination, you actually titrated 50.0 mg/L standard chloride solution but you got 46.2 mg/L. Calculate your percent error.

  Question: In a chloride ion determination, you actually titrated 50.0 mg/L standard chloride solution but you got 46.2 mg/L. Calculate your percent error. Select one: a. 7.60% is the actual value larger or smaller than the experimental value? b. 0.076% c. -7.6% d. 42.5% e. -7.60% Answer a. 7.60   Want to get help with […]

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Chem 132: The correct name for FeO is

  Question: The correct name for FeO is Select one: a. iron monoxide b. iron(II) oxide c. iron(III) oxide d. iron(I) oxide e. iron oxide   Answer b. iron(II) oxide   Want to get help with all your chem 132 tasks? Post your Question Now, It’s free to post, cheap for you, and easy to hire. .  

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Chem 132: The Lewis structure for which of the following contains the greatest number of lone pairs of electrons?

  Question: The Lewis structure for which of the following contains the greatest number of lone pairs of electrons? Select one: a. H2O b. CH4 c. F2 d. H2 e. HF   Answer c. F2   Want to get help with all your chem 132 tasks? Post your Question Now, It’s free to post, cheap for you, and easy to hire. . […]

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