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- 1. Multiple ChoiceConsider the general balanced equation for a single replacement reaction shown below:
A + 2BC → AC2 + B2
If 5.0moles of A are combined with 4.0moles of BC, what is the maximum number of moles of B2 that can form?2.0 moles of B24.0 moles of B25.0 moles of B21.0 moles of B2 - 2. Multiple ChoiceConsider the general balanced equation for a single replacement reaction shown below:
A + 2BC → AC2 + B2
The molar mass of B is 1.0grams. If 2.0 moles of A and 2.0 moles of BC are mixed and allowed to react, what theoretical mass of B2 can form?2.0 grams of B21.0 grams of B24.0 moles of B23.0 moles of B2 - 3. Multiple ChoiceIn the chemical reaction
2H2O → 2H2 + O2twice as much H2 as O2 will be produced.equal amounts of H2 and O2 will be produced.twice as much O2 as H2 will be produced.there is no way to know how much of each will be produced. - 4. Multiple ChoiceAmmonia (NH3) is widely used as a fertilizer and in many household cleaners. How much ammonia is produced when 6 mol of hydrogen gas react with an excess of nitrogen gas in a synthesis reaction?4 mol6 mol3 mol9 mol
- 5. Multiple ChoiceThe complete combustion of 1.5 moles of methane (CH4) would require how much O2?3.0 mol1.5 mol0.75 mol1.0 mol
- 6. Multiple ChoiceWhen nitrogen and oxygen gases react in the cylinder of an automobile engine, nitric oxide gas (NO) is formed. After it escapes into the atmosphere with the other exhaust gases, the nitric oxide then reacts with oxygen to produce nitrogen dioxide gas, one of the precursors of acid rain.
N2 + O2 → 2NO
2NO + O2 → 2NO2
If 46g of NO2 are formed, how much nitrogen must have reacted in the engine?14g N228g N27g N246g N2 - 7. Multiple ChoiceConsider the reaction:
CH4 + 2O2 → CO2 + 2H2O
Select the true statement:4.00 moles of O2 can react to produce 4.00moles of CO2.8.00 moles of O2 can react to produce 144.0 g of H2O.88.01 g of CO2 could be produced upon reaction of 64.00 g of O2.4.00 moles of CH4 will react with 2.00moles of O2. - 8. Multiple ChoiceFe2O3 (molar mass = 160. g/mol)
reacts with
CO (molar mass = 28.0 g/mol)
according to the equation
Fe2O3(s) + 3CO(g) → 3CO2(g) + 2Fe(s)
When 400g Fe2O3 reacts with excess CO, how many Fe atoms are produced?5 atoms3x1024 atoms6x1023 atoms1x1024 atoms - 9. Multiple ChoiceAcetylene (C2H2) burns in pure oxygen with a very hot flame. The products of this reaction are carbon dioxide and water. How much oxygen is required to react with 52.0 g of acetylene?
?C2H2 + ?O2 → ?CO2 + ?H2O160. g32.0 g52.0 g240. g - 10. Multiple ChoiceWrite and balance the equation that illustrates the synthesis of water from its elements. How much hydrogen and oxygen would be required to generate 108g of water?12g H2;
96g O210g H2;
64g O26g H2;
32g O22g H2;
16g O2 - Answer choicesTagsAnswer choicesTags