July 31, 2019

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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. . […]