Exam (elaborations)
Chem 101 Exam 2 Review.pdf
- Course
- CHEM 101
- Institution
- Chamberlain College Of Nursing
Exam of 5 pages for the course CHEM 101 at Chamberlain College Of Nursing (Chem 101 Exam 2 R)
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Chem 101 Exam 2 ReviewWhen table sugar is burned in the air, Carbon dioxide and water vapor are products as
shown by following unbalanced equation .
How many moles of oxygen gas are required to react completely with 2.0 moles of
sugar ? - 24
You have two HCL solutions labeled Solution A and Solution B. A has a greater
concentration than solution B. Which of following statements are true? - If you have
equal moles of HCl in both solutions, B must have a greater volume
Which of the following statements is false for the reaction of hydrogen gas with oxygen
gas to produce water? - Subscripts can also be used to balance this equation, just as
they can be used to balance the charges in an ionic compound
Choose the response that best answers the question " Why do we not change
subscripts when balancing a chemical equation ?" - Compounds composed of the same
elements and having different subscripts are different substances
If a 7.50 g sample of ammonium nitrate is dissolved in enough water to make 315 mL of
solution, what will be the molarity ? - 2.98 M
If you mix 20.0 mL of a 3.00 M sugar solution with 30.0mL of a 5.0M sugar solution, you
will end up with a sugar solution of - 4.20M
What is the minimum volume of a 2.00 M NaOH solution needed to make 150.0 mL of a
0.800 M NaOH solution ? - 60.0 mL
Determine the number of moles of CaC2 produced after the reaction is complete - 4.00
mol
, Determine the number of moles of CO2 produced after the reaction is complete - 2.00
mol
Determine the moles of reactant left over - 6.00 mol of CaO
Which of the following is a clue that a chemical reaction happened? - Solid forms
Flame is produced
Bubbles form
Which of the following chemical equations are balanced? - CH4+2O2= CO2+2H2O
What should be adjusted to properly balance a chemical equation - Coefficients
Solution magnesium chloride (MgCl2) mixed solutions silver nitrate ( AgNO3) and solid
forms. What is one of 2 possible formulas? - AgCl
Combustion - Ignition, oxygen, and something flammable reacting to form water and
carbon dioxide
Precipitation - Mixing of 2 solutions to create solid product
Gas involving reactions - Chemical reactions that create gas product
Balancing chemical reactions - Same number of each type of atom on both sides of
equation
Don't balance by changing the subscripts
Balance the least complicated molecule last
Mainly trial terror
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