Exam 4: Stoichiometry
Exam 1: Introduction to Chemistry42 Questions
Exam 2: Atoms and Molecules45 Questions
Exam 3: Molecules Moles Chemical Equations45 Questions
Exam 4: Stoichiometry40 Questions
Exam 5: Gases45 Questions
Exam 6: The Periodic Table and Atomic Structure45 Questions
Exam 7: Chemical Bonding and Molecular Structure40 Questions
Exam 8: Molecules and Materials37 Questions
Exam 9: Energy and Chemistry40 Questions
Exam 10: Entropy and the Second Law of Thermodynamics30 Questions
Exam 11: Chemical Kinetics40 Questions
Exam 12: Chemical Equilibrium40 Questions
Exam 13: Electrochemistry40 Questions
Select questions type
A series of ant bites injects 45 μ g of formic acid (HCOOH) into a patient's skin. Considering formic acid is a monoprotic acid (donates one H+), how much baking soda (NaHCO3) is required to neutralize the acid?
(Multiple Choice)
4.9/5
(75)
An ethanol plant begins a production run with sufficient reactants to predict a theoretical yield of 1250 metric tons of ethanol. The process produces 1178.6 metric tons. What is the percent yield for this production run?
(Multiple Choice)
4.7/5
(63)
If a "classic" SUV features a 52 gallon (197 L) gas tank and assuming complete combustion and a molecular formula of C8H18 for gasoline, how many L of air are consumed per tank of gasoline. Recall that air is 21% oxygen and assume a density of 0.78 g/mL for gasoline.
(Multiple Choice)
4.9/5
(79)
Complete combustion of a hydrocarbon mix such as gasoline will yield carbon dioxide and water as the major products.
(True/False)
4.8/5
(77)
Given that: CH4 + 2O2 → CO2 + 2H2O, how many moles of carbon dioxide are produced in the complete combustion of 100.0 grams of methane (CH4)?
(Multiple Choice)
4.7/5
(86)
A 2.0 L vessel is filled with 7.3 × 10 − 4 mol hydrogen and 6.8 × 10 − 4 mol oxygen. How much water can be produced?
(Multiple Choice)
4.9/5
(64)
Phosgene is produced in the reaction of carbon monoxide with chlorine gas:
CO( g ) + Cl2( g ) → COCl2( g )
What is the theoretical yield of phosgene if 0.767 moles of CO reacts with excess Cl2 gas?
(Multiple Choice)
4.9/5
(89)
If tin reacts with sodium hydroxide according to the reaction:
Sn + NaOH → Na2SnO2 + H2,
How many moles of hydrogen are liberated from the complete reaction of 3.47 × 104 kg of tin metal in excess sodium hydroxide?
(Multiple Choice)
4.9/5
(82)
A meat preservation technique requires sodium nitrite. The preservative is prepared by streaming NO( g ) and O2( g ) through Na2CO3( aq ). What is the percent yield for this reaction if the addition of 12.73 g of NO( g ), 16.49 g of O2( g ), and 35.82 g of Na2CO3( aq ) result in the formation of 16.81 g of NaNO2.
NO( g ) + O2( g ) + Na2CO3( aq ) → NaNO2( aq ) + CO2( g )
(Multiple Choice)
4.9/5
(78)
If 15.00 mL of a 1.00 M HCl solution is mixed with 25.00 mL of a 0.250 M NaOH solution in a process that produces 273 mg of NaCl, what is the percent yield?
(Multiple Choice)
4.9/5
(82)
Sulfuric acid can be manufactured using the reaction:
2 S( s ) + 3 O2( g ) + 2 H2O( l ) → 2 H2SO4( aq )
If a manufacturing site consumes 65 metric tons (1 metric ton = 1000 kg) of sulfur with unlimited access to O2 and H2O, how many metric tons of sulfuric acid may be produced?
(Multiple Choice)
4.8/5
(78)
The presence of oxygenates such as MTBE in gasoline result in a more complete combustion and reduced unwanted emissions.
(True/False)
4.8/5
(84)
Consider the reaction between NaCl and AgNO3 to form silver chloride. How much of the insoluble precipitate will be recovered if 582.4 grams of AgNO3 reacts with excess NaCl?
(Multiple Choice)
4.9/5
(66)
If 92.8 grams of sodium nitrite are dissolved in 2.3 L of water, the resulting solution has a molarity of:
(Multiple Choice)
4.9/5
(69)
The following reaction illustrates the reaction of methanol with oxygen to form carbon dioxide and water:
2 CH3OH( l ) + 3 O2( g ) → 2 CO2( g ) + 4 H2O( l ).
How many moles of water are produced in a reaction of 15 moles of methanol with 30 moles of oxygen?
(Multiple Choice)
4.8/5
(82)
If 2.5 moles of each of these compounds are burned completely in O2, which will produce the largest amount of CO2?
(Multiple Choice)
4.9/5
(81)
If a 88.2 gram charcoal briquette (assume pure carbon) is burned in an excess of oxygen, what mass of CO2 is produced by the reaction?
(Multiple Choice)
4.9/5
(83)
Zinc reacts with oxygen to form ZnO. How many moles of ZnO will form from a reaction of 4.43 moles of Zn and 3.05 moles of oxygen?
(Multiple Choice)
4.8/5
(84)
If 60.6 grams of aluminum powder reacts with 125 grams of iron(III)oxide, how much iron metal is recovered?
(Multiple Choice)
4.9/5
(73)
Showing 21 - 40 of 40
Filters
- Essay(0)
- Multiple Choice(0)
- Short Answer(0)
- True False(0)
- Matching(0)